Celebrity Take a Peek Inside Buckingham Palace An inside look at the Palace's state rooms, where the royal receptions will be held By Simon Perry Simon Perry Simon Perry is a writer and correspondent at PEOPLE. He has more than 25 years’ experience at PEOPLE covering the royals, human interest and celebrity. People Editorial Guidelines and Alison Schwartz Alison Schwartz Alison Schwartz was the former director of digital platforms at PEOPLE. She died in 2020. People Editorial Guidelines Published on March 28, 2011 11:30AM EDT Photo: Nick Ansell/AP It takes two parties to properly celebrate a royal wedding. Although the Palace has never hosted a pair of celebrations post-nuptials, it’s promising a double dose of royal fun for Kate Middleton and Prince William‘s big day in the coveted state rooms. About 600 guests will enjoy champagne and canapés with the Queen after the wedding ceremony, and a few hours later, Prince Charles will host a dinner dance for about 300 guests. With 19 state rooms to choose from, likely frontrunners are the lavish Throne Room, the Ball Supper Room and the Picture Gallery.