We were there in late 2004. I knew ahead of time what kind of pranks to expect but did not share this with my family. Lo and behold, our then 6 year old was in tears at first because she thought the waitress was being really, really, really mean to us. After explaining the big joke to her, and the server toning it down a bit, dd began to enjoy the fun. She eventually thought it was hilarious to see another table get scolded and had to be punished by riding around the restaurant and lobby on their stick horses. Both dds wanted their turn on the horses next!
All this to say you know your children best. In hindsight, I should've prepped my older dd beforehand because she is a very sensitive little girl. It turned out fine but started off sour with the tears. Thank goodness we have some happy memories of WCC, though!