I did one of these last night and it was very entertaining. Nice being shown around the Palace when it's empty. If you're thinking of going then do so, but they've only got a few dates available now.
Be aware though that it is most definitely "adults only". If you are easily shocked, or offended, then it is probably not for you. ;p
You get a glass of champagne at the beginning too!
And also be aware that even though the website says "90 minutes" my tour actually lasted about 2 hours. Something to bear in mind if you have long way to get back to you accommodation.Edited: 01 September 2014, 11:39