We liked Wolfgang Puck Cafe, but we didn't take the children with us. However, the children's menu looks fine and with the noise level in the restaurant, I could have taken my kids without worry. That place was the loudest TS restaurant I have been to with the possible exception of Spoodles.
The only DP limitations I remember at WPC was if you wanted the sushi, it was considered an entree and not an appetizer. What we really enjoyed were the BBQ chicken quesadilla, the spring rolls, the ravioli, the shrimp and scallop pasta, and I loved the carrot cake.
We went to Planet Hollywood in December, 2005 and December, 2004 and did not enjoy either meal. Didn't have the guts to try again this past December.