There is the danger of losing the official permission to operate a restaurant in Cincinnati if you make yourself liable to prosecution. The national casinos in United States have for sure a permission. The jurisdiction in United States and therefore also in Cincinnati says however that poker is to be classified as a game of luck. The problem of whether poker is a game of chance in the sense of the legislation has been not cleared for decades and there have been many treatises on the subject. One can be convicted based on these regulations if one organizes public gambling or participates in it.
Poker Cash Games can meet in Ohio Ohio and thus as well in Cincinnati the criminal offence of illegal gambling. Legal notice: Is it legal to play poker Cincinnati ?