i'm sure you could do it if you wanted to, if they don't do it anymore you'd be a big sensasion! people wear cowboy hats in there don't they? why not a tuxedo? go for it man
Im sure some people do it, however it would be kinda cheesy. Everyone in the casino would ask if you just got back from a wedding or something like that. Try getting a nice looking suit. That would look much better.