Maybe
If you've been read the trespass act, and afterwards they send you a letter telling you you're welcome to come to the casino, you certainly can return. Just save the original at home and keep a photocopy in your pocket when you go.
In Nevada people can now identify themselves as problem gamblers and 86 themselves from the casinos. Might be a fun trick, to ask to be banned from the casinos, then when they send you their junk mail, return to the casino and feign a relapse of your "compulsive gambling" problem and sue them for any losses.
Hey there's an idea! 86 yourself from a few casinos that you don't want to play in anyway, and see if that helps you get a valuable reputation as a CG around town.