I agree with Hoop Dee Doo. I have it booked for our last night in April. We have an early flight out the next morning. I don't know if I'll be able to resist going to the MK one last time after dinner.
Lots of great suggestions. If I were doing a special "last night" celebration, price was no object, and I didn't have young kids in the group, I would try to get into Victoria and Albert's for the chef's table...if you have enough planning time to get the reservations well ahead, that is.