I have but it was several years ago Ive just checked the restaurant thread and it was in February 2009.
I really enjoyed it but wouldn't want to do it every visit. It gave me chance to try things I wouldn't normally order.
I remember being surprised how big most of the courses were as had expected them to be smaller than normal. I also remember being totally stuffed at the end and the whole meal taking a very long time - DD was very bored by the end as was only about 9 at the time