We had dinner at both last August.
They are completely different. If you want characters and a buffet, do 1900 PF. Because it's a character meal, it is very loud, but it's fun, too, because the stepsisters and stepmother keep it lively. We found the food to be decent for a buffet.
If you want a quieter meal, then do the Wave. Our food there was good but not exciting.
We'll be back in August, and we've got dinner at the Wave, but we're skipping 1900 this time.
Service at both places was not the best for different reasons.