Fans camp out ahead of royal wedding

Crowds filled the streets around Windsor Castle on Friday.

"We're only here for 72 hours specifically to watch Meghan and Harry go by in 10 seconds," Valentine told ABC News. Like Markle, she graduated from Northwestern University, but that's not all the two have in common.

"They're an interracial couple just like us," she said. "I think it's really important for the world to see that someone who doesn't look like all of the royals has captured the heart of Prince Harry," she added. "It's that much more special to me because she's half African-American. She's a black princess. You know, little black girls all over the country, all over the United States, are going to look at her and think, 'Wow, I can do that too. I can be a black princess.'"

For Judith Hunt, visiting the U.K. for royal weddings has become a tradition. She traveled from New Jersey with her 8-year-old granddaughter Luna, and the two plan to spend the night outside Windsor Castle.

"I brought her mother for Charles and Diana’s wedding," she said while pointing at her granddaughter. "And then I brought her older sister for Will and Kate’s wedding and then I said, ‘Well, we have to do this so that everybody has the opportunity.’”

On Saturday, some 100,000 people are expected to fill the streets around Windsor Castle for the royal wedding. After the wedding ceremony, which starts at noon local time, the newlyweds will take a carriage ride through the streets of Windsor.