I played unrated at a casino far from my house and used obvious spread 1×25-2×500. I won like 5k, left and came back like 30 minutes later to cash out. The pit boss from my table ran over when she saw me in line and talked to the cash center manager. That should have been my cue to leave but I wanted to leave that area and not come back so I decided to go ahead anyways. As expected, they asked for my ID which I gave up. They took it and photocopied it then paid me out.

Now the interested thing is several weeks later, I recieved comp offers from them. And extremely generous ones. ~1000$ in free play a week. I play unrated, they obviously knew I was counting, and they sign me up for players card and give me this??
Is there a catch?

My main question is, how do I extract the value from this freeplay the best? My plan was to arrive the day one 1000$ freeplay expires and stay through the next day so I get the next one. That's 2000$ in freeplay. So, I assume they break up each 1000$ in multiple 100$ or 200$ freeplay coupons? Assuming I have to match each freeplay, my general intuition is as follows: I have to play 2000$ of my own money which is giving up 2000×0.005 or -$10 EV. The freeplay is approximately 50% of its face value in EV so +1000$. So about +$990 in EV? My plan. Was to sit down and play 20 hands of blackjack with the freeplay match until I burn through all freeplay and leave.

Thanks for any help.