Princess Eugenie and Jack Brooksbank
princess Eugenie's two-day royal wedding celebration includes a festival vibe theme. Pictured: Princess Eugenie and Jack Brooksbank attends the wedding of Pippa Middleton and James Matthews at St Mark's Church in Englefield, west of London, on May 20, 2017. Getty Images/Justin Tallis

Princess Eugenie's royal wedding will include a unique feature not present in Prince William and Kate Middleton's and Prince Harry and Meghan Markle's nuptials.

Princess Eugenie and Jack Brooksbank's upcoming nuptials will have a two-day celebration. The second day of the celebration will have a much more relaxed "festival vibe." It will be complete with cocktails, afternoon tea and fairground attractions.

"After the more formal celebration at Windsor Castle, the Saturday bash will be a relaxed party," a source told The Daily Telegraph (via Express). "There will be dodgems and funfair rides, coconut shies, lots of food stalls, loads of cocktails, Bloody Marys for the hangovers and a festival vibe."

Princess Eugenie's wedding has been predicted to be bigger than the Duke and Duchess of Sussex's nuptials. In fact, the bride invited 850 guests to actual ceremony when the venue can only hold 800 attendees. According to a royal expert, it's unlikely that Princess Eugenie will slash her number of guests.

"I would have thought that Eugenie won’t invite more people than can be seated comfortably in the chapel," James Brookes said. "Of course, seating for 800 is much bigger than the typical wedding and given this one isn’t going to be as big as Harry and Meghan’s – plus there's no need for inviting dignitaries either – I would have thought everyone she wants to be there will have a seat."

In related news, Prince Andrew reportedly asked BBC to air Princess Eugenie's royal wedding. However, the network refused because they believed that there would only be few viewers.

Meanwhile, royal expert Richard Fitzwilliams suggested that Princess Eugenie chose an ideal wedding dress. The next royal bride and her sister, Princess Beatrice, made headlines at Prince William and Kate Middleton's royal wedding in 2011 due to their eccentric fashion.

"There are members of the royal family who are style icons but this could not be said of Eugenie who has not distinguished herself in the sartorial stakes so far," Fitzwilliams told Express. "I think she will choose a delightful wedding dress and the wedding itself will be charming… Memories of Beatrice and Eugenie's outfits at William and Kate's wedding do die hard, so Eugenie must make sure she chooses the ideal wedding dress on her big day."

As for the wedding, Middleton and Markle will have to follow Princess Eugenie's dress code on her big day. The Duchess of Cambridge and Duchess of Sussex have to wear hats for the occasion.