It's Wedding Day for the Bates Family

Part 2: Alyssa Bates' big day arrives and the tight-knit family has wedding jitters over her moving away.
10:03 | 07/13/14

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Transcript for It's Wedding Day for the Bates Family
It's tornado season, and on their road trip to Texas, the bates are forced to take shelter. We're tracking a tornado warning right now around 15, 20 minutes ago. If there's a real storm, it ends up being a realtor nay D tornado, run around the corner, down the hall, about halfway, stop right there, sit against the wall put your head down like this, okay? Until then, we're going to sing. ? Singing hymns is a way for the family to calm their nerves. ? Meet him in the end ? But when another storm hits, 11 of the kids huddle together in a bathroom. Even the grown children are in tears. And finally, the danger has passed. Okay. We got 20 soft tacos. And two harrowing days later, the family finally arrives in Texas. Long day. Hey, buddy. You want to come see me? It's been three years since that trip and everyone has grown up. Alyssa is about to be a bride. And leave the nest. But Gil and Kelly still want to have more kids. Kelly is now 47 years old. It's unlikely that will happen. Is that the end of the line for the kids? We would love nothing more than to have a new baby on the way, but we also know that time's clock is ticking away. But they do have a baby in their future. They're about to be grandparents. Zach, their oldest got married back in December. She's the best little wife. She's beautiful. She's loving. And they are expecting the first bates grandson in October. Beautiful view. Look at all the -- Unlike Alyssa, who will be moving to Florida, Zach and Whitney settled down close to their family. It's a security knowing our parents are so close. 23-year-old Erin is also a newly wed. She and her husband Chad live in this cottage, also not far from her parents. It's so quiet. It's peaceful. I love it. This is their master bedroom. When we got married, I was like, Chad, can we paint our room pink? He said, whatever you want, it's so nice. Some things are more important than others and definitely the paint of my room is definitely not on my high list of priorities. It isn't easy to get Gil's approval. Michael's watched two of her sisters get married before her. We pray for their spouses and just watching them grow together. It's special. But her wedding could be next. This is her suitor, Brandon. But first, it's Alyssa's turn. This is my little ring bearer. Yeah, you going to wear a tux? This is her last night in her childhood bedroom. Feels very weird, this being my last night here. It's going to be an adjustment for everybody, but thank the lord for texting. Like everything with the bates, the wedding dress is different. Modest. I was fine with this. I didn't want it any lower. I was uncomfortable with it lower. In fact, Alyssa had to have her dress altered. She added the little cap sleeve and blended it in. But with her shoes, she can go wild. They're so cute. And -- I added my -- yes. For the mother of the bride, about to host 700 wedding guests -- You call me if you need me. The del is in the details. Feel like I need to be 100 places at one time. Yikes! Yeah, that's good. Perfect. This is only their third wedding there are 16 more to go. Money's tight, so Alyssa's wedding day is DIY. Oh, look, you have your groogroom at work. Luckily, more manpower has just arrived. Hey, hey, the work crew's arrived. The duggars are the most famous megafamily in America, thanks to their tlc show "19 kids and counting." They are also getting ready to marry off one of their daughters. The whole emotion of it is different, because the guy's the protector over the girl. To give your daughter away to a guy, you have to be really careful. That's his baby girl. At the rehearsal, everyone is feeling emotional. What will be going through your head tomorrow? Well, I'll be -- I'm sure I'll be talking to Alyssa, telling her I love her and I'm going to miss her. I'm excited for them, but I'm going to be sad. To ward off the sadness, the rehearsal dinner is a tennessee-style barbecue. But even good eating can't keep the tears at bay. One by one -- I don't know how I'm going to get along without you. Alyssa's family comes to the microphone. It's too much for Josie, who shares a room with her older sister. With all these emotions, tomorrow's wedding day is shaping up to be a tear jerker. The wedding day is finally here. But even a happy couple has pre-wedding jitters. I feel really strange. I'm really excited, more than I've ever been in my life. I'm so nervous. I can't even tell you how nervous I am. I feel like I'm -- As Alyssa's dad officiates, the couple exchanges their vows in a whisper. Til death do us part. And then, the moment the groom has been waiting for. You may kiss your bride. Up nm now, the couple has barely touched each other. A bates family rule. Wait until marriage. Mr. And Mrs. John Webster. Today, everything in the wedding seemed to go really well. So, I'm happy for them. It really is a celebration. After the honeymoon, John has kept the destination a secret. But just one day after the wedding, the new Mrs. Webster joins instagram as webster4ever and reveals their destination, lake tahoe. It's a bold step for a bates. Growing up, another rule. No TV, no internet. But within a month, she has more than 24,000 followers. It's kind of weird sometimes that that many people would be interested in seeing our lives, but it's neat. She's not the only one. Lawson has over 13,000 people following him. And rising. ? But there's one ? ? who will guide me through ? It's a perfect showcase for his budding music career. Like this video for his first album. ? Beyond the blue ? After their honeymoon, the love birds settled here. A three-bedroom home just outside Orlando. It's very quiet. I mean, my family has all good intenses and it love them to death, but it is kind of hard when you have, like, 21 people around you all the time and there's, like, no private conversation. At home, John and Alyssa are the peck fact of wedded bliss. Alyssa has been spending her time cooking. I'm so used to cooking for 20 and 21 that it's different cooking for two people. And decorating. It's kind of really cute. I can just get a new shade for it. A bates to the core, she's gotten most of her furnishings at goodwill. I got all of this for $11. They are already thinking of starting a family. You're hard as a rock. You're not interested in having a career? I'm afraid if I started a career, I'd end up getting pregnant and wouldn't go through. I would love to have a big family. Six or eight or maybe ten. I could do ten. Are you going to do 20 like your parents? I don't know that I can handle 20 kids. Whether or not she can handle it, a whole bunch of kids are about to arrive. Yep. They're here. It's the first time Alyssa's family has come to visit. And true to form, the late bates arrive at 1:30 in the morning. Hey! Welcome to the bates. There are too many bates to stay with the newlyweds, so, finding places for everyone to sleep is not easy. This room is off-limits, too! Mom gets the V.I.P. Tour of Alyssa's love nest. I love it! The mirror and that one were on the side of the road. I love a bargain shopper. I do, too. You taught her well. She shops like you. I love that. Oh, don't look. The reunion is mostly filled with smiles, but it's clear how much the whole family misses Alyssa. Especially her former roommate, Josie. You miss her, huh? I do. I guess we're having the empty nest syndrome, we only have 16 still at home. But when it comes down to it, they aren't losing a daughter. The bates family just got bigger.

This transcript has been automatically generated and may not be 100% accurate.

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