It's a really pointless scam in that sense. The rewards are consequently a joke as there's nothing to get comp'ed there. You can get a player's card but they admit that they only bear the Foxwoods name and have no connection to the one in CT. Immediately though when you enter you can see that it's simply a converted convention room.
*EVERYTHING YOU NEED TO KNOW* I was optimistic about this place because I was staying at the Fairmont and excited there was a Foxwoods connected.