We've been to WCC twice. Once in '96 with a group of 9 and again last December. I was 14 when we went in '96 with my 12 year old cousin, 15 year old cousin, 17 year old brother, and 18 year old cousin. None of us enjoyed it as we all just wanted to relax and eat. Of course, our parents kept trying to get us to get into it and I think they enjoyed it more than we did.
When we went in December, we were all over the whole experience within 10 minutes. Maybe we're not audience participation restaurant fans. But we do love HDDR. Anyways, the first couple of times they yell for ketchup was pretty funny but after the 27th time I was sick of hearing the word ketchup. The food was nothing to write home about and the bottomless milkshakes were disappointing. We gave it a second chance and apparently it's not for us.
On a side note, I almost wish WL had built WCC in a seperate building. There were some nights we just wanted to relax in the lobby but in the afternoon/evening it's so loud.
Some people love WCC but it wasn't for us.