It'll still be fun and there will be games no doubt.
However, when I did a late dinner there last year my 2 year old fell asleep at the table and the 6 year old moaned that everything took so long because he was tired and grumpy. Only the 10 year old liked it.
I didn't care for the place and won't be going back. But others rave about it.
We ate there @ 8:30 pm. It was DH, Me, DS11, DS9, DS7 and BIL, his GF and her DS12. The kids loved it! Noone knew anything about the WCC except for DH and myself. Everyone was so surprised when the waitress came over threw napkins at the table and started yelling at the kids. They had such a good time with the horse races and hokey pokey!! I am trying to figure out when we can eat here again!!