Transcript for 'Jersey Shore' cast reminisces as they reunite in Miami for a 'family vacation'
Going harder than we've ever gone before. One of the most famous cast in reality TV history reuniyou knunited in Miami for "Jersey shore" family vacation. Let the fist pumping begin. Snooki. Jwoww. Mike. Vinny. Ronnie. Arguably all grown up with careers and spouses and even children. We've part yied hard before but never seen anybody funnel wine. Seems like some things never change. This is a vacation from our real lives. We really took advantage of it. I wonder in those six years obviously some you have didn't leave on good terms, right, so in those six years what has happened between your relationships with each other? We grew as a family. Definitely. Last year when we did a small reunion on another network it made us realize how much we missed each other and got in a group chat together which sounds corny but it brought us together. Every single day we talked. Our group chat is amazing. The day we left the house we were texting each other. We have this unbreakable bond. I think it's the best time for now. I think we missed each other long enough. We were going to come back it had to happen and they pick now. And other shows are coming back like "Will and grace" and "Roseanne." I'm a criminal. Brought back the duck phone. I stole it from our old shore house. Feel like if we do a reunion you have to have the duck phone. Nicole known as snooki gave "Nightline" first look at the digs. This is the dining room where we have under is dinners and walk into grand master kitchen. These water melon put it in the blender with vodka, watermelon, that's all I know. Oh, my god. No thank you. Okay. Well good luck in your interview. Thank you, momma. Hello, Miami. Just look at the view. And the buildings. They light up. Oh, hey. Best part of the house. You want to do the tour with me. In the daytime you see sting rays, dolphins and sharks. We get coconuts. We open it and drink it because it's healthy. Coconut water is healthy. When have you opened it for a drink? Just lie. Now we're going in, we have a sleeping situation. Not guilty. Not guilty. My god, stop. Their chemistry something mtv president Chris Mccarthy hopes will translate a second time around. One of most iconic friendships and the cast is so young while their lives have changed an they had are at different coming of age moments we all want to the break out and escape. The world was first introduced to the "Jersey shore" in 2009, the show entertained fans for six seasons with its over the top portrayal of a lifestyle fueled by fighting and party and tranning. It was a version of the real world except seven different types of people put seven of the same type of people together. That's why they really gelled an Hollywood chemistry and had friendships and were like a little family, that also had sex with each other. From snooki's arrest though the charges were later dropped. And the infamous note. October ale waitresses breasts. Those iconic moments would help the turn into a cultural phenomenon. We knew it would be a good show, never know when you will have lightning in a bottle. And you can have it ten times but it N does the always work. It took off and hit new levels we didn't think were possible. I think it redefined for us what is a hit show and how do we think differently about our programming. Are you surprised by all of the things that have become so sort of legendary and synonymous with the show. It's amazing to me. All of the things they take out of it. Six years later people are still watching old episodes. That's amazing. At the height of its popularity the show grew close to 9 million viewers. With stars like snooki, the situation, and Pauley D reportedly bringing home $2.5 million per season. It didn't seem produced at all like they were being themselves. They were sleeping with a different person every night and N didn't care that they were being seen as alcoholic people who are quite promises cuous and I think that was fascinating for America to watch. It was most popular show in all of mtv history and all of TV unscripted so it was massive. The cast has remained the public eye since the show went off the air in 2012 with spin off series, book deals and of course weddings and babies. Jwoww and snooki versus been successful teaming up on various you tube type of shows. Pauley D is a really successful dj. But the last six years haven't been one giant party for the entire cast. Mike S or the situation has been in and out of rehab twice for addition to pain killers. People are surprised to hear you're sober. 289 Mon months. Before I got here I was two years sober so had a strong a version to recovery. He pleaded guilty for tax evasion. It's similar to recovery take it one day at a time. I can't change the court case but I can change myself. I can change my eaction to certain circumstances. So I can become a better person. It's like they really matured into the good people they always were. It's just the slightly more adult vr there's times they are not adult at all which is why we love them. Despite the fact first episode hasn't airs family vacation has renewed for a second season. So excited. So thankful for. My liver is still punching me in the face. Yeah the hang over. For sure. For "Nightline" in New York.
This transcript has been automatically generated and may not be 100% accurate.