Recently I had to flee the Foxwoods reservation during a confrontation with some tribal members in the parking lot of their Mobil convenience store. It all started when I got shortchanged at the cash register. Two of the culprits were on-duty employees, and one appeared to be on drugs. When I saw the tribal police cars come around the corner, I reckoned they weren't coming to take my side so I got the hell out of there very quickly, and probably won't be going back for a long time. Certainly not to the convenience store.
I recommend you don't do anything at that place other than sit at a gaming table, and avoid all contact with tribal members. Since the reservation threw out the state troopers and is now self-policed, things have gotten lawless there, mostly involving tribal members.