I'm guessing that you're staying at the Hard Rock Hotel. I've never have eaten at any of the restaurants there. I have eaten at the Hard Rock Cafe across the parking lot. It is reasonably priced and they have a kids menu. One of DW's and I favorites.
Yep . . . don't plan on going to their pool on a weekend. The Palms has taken a lot of their market share, but it's still a place for the younger party crowd. but if you're just going to check it out, or go to a show, by all means go. Last year during the holidays we took our kids to see the Brian Setzer Orchestra at The Joint and had dinner at Mr. Lucky's before the show and it was fine.