Margaritaville and NBA are definitely kid-friendly. Can't speak for Pastamore as we haven't eaten there. I don't know if they do this every night, but when we ate at Margaritaville last month, there were a couple of people on stilts going around making balloon animals/hats/etc. for everyone. It really was a lot of fun and we all had a great time, including my 11 and 13 year old boys!
NBA was fine for all of us, but nothing really special happened while we were there.
I know you didn't ask about Hard Rock Cafe, but we found that to be pretty kid friendly also and enjoyed it more than NBA.