Indiana normally does not used fun nite currency. If you get on the VIP cruise they are more than happy to take your real money. I just remembered something that happened on Caesars first cruise. I was sitting next to a guy who was paid incorrectly two different times and he gave the money back(once was like $50). In thinking about it I bet that he was either one of the gaming commission members or a casino employee testing for accuracy of the dealers. He sure didn't seem worried about giving the money back.