LONDON (Reuters) - Staff at Buckingham Palace have lifted the lid on preparations for Prince William's wedding next month, giving an insight into what guests can expect and the amount of work needed to make it a success.

From cooks and hospitality planners to cloakroom attendants, employees at Queen Elizabeth's London residence are finalizing plans for the reception which will follow William's marriage to girlfriend Kate Middleton at Westminster Abbeyon April 29.

"For a lot of people it will be a once-in-a-lifetime opportunity," said Mark Flanagan, the queen's head chef.

Flanagan, who has worked with some of the world's top chefs such as Raymond Blanc, and his 21-strong team will be responsible for preparing dishes for the 600 guests invited to the reception.