I have probably had more checks from a casino, for a win, than you. Just not for table games. I use cash to play table games and cash out via the cage, and take cash. Why would I need or want a check? I have walked out of casinos with cash with over 100k in winnings. Oftentimes I would just get a casino BOX and keep the cash in there untill I felt comfortable exiting.
I dont need my family's credit to play, I can use my own cash.
Where there were promotions that called for it, I would just put up front money and take markers.