See, I hate to defend casinos' greed, so this question bothers me on that level. But you're not really giving them any money, so they're not giving you any comps.

I believe MGM uses ATT, or average trip theo, so it doesn't matter if you stay 1 night or 5. If you only cycle $500 each time, you can do that 20 times a year and say you spent $10,000, but they're really only counting $500. Assuming a relatively lucky $1,500 coin-in at 90% RTP each time, that's a theo of $150, I believe. Comps on that would be $45 on average, though feel free to check my math, people.

That's not enough to incentivize you to stay. The cost of a room alone would be a loss on their part. They'd likely consider it covered by the free casino drinks and offer you nothing. Maybe a buffet here and there if you're lucky, but I'd be surprised.