out of the three, id have to say plaza...tonys is way more expensive and less authentic than even olive garden (and thats saying a lot), and from what i hear the wait staff has become less than stellar lately. Liberty has uber salty food choices, and while the characters are there, its not really worth it. The plaza is a nice place to stop in to have a semi fast but good meal. They have a great strawberry salad, and grilled chicken sandwich. We have gone here a few times and have only been semi dissapointed in the service once. Have you thought about the crystal palace for dinner? I haven't been there myself in some time, but its gotten some great reviews!