Let's be real the only reason this is a big attraction in Vegas is the fact that it serves alcoholic slushies so when I went I didn't even bother with the food. It's the same everywhere!
We got a large slush in their taco bell cantina "fat tuesday" type cup/tower thing for $15. It is one dollar less than the original fat tuesday however I feel like it isn't as worth it because I'm not sure if they do refills here.
I think most people go here because you get some hints of nostalgia with the slushies combined with adult fun with the alcohol. I probably wouldn't return unless I was drunk and/or hungry at some odd hour of the night.