High limit rooms in Vegas have machines in them also. A casino isn't going to turn down money, particularly from a high roller.
They have them in the high roller room in our Casino's. Stephen Paddock used to bet up to $100 per hand on them.
Also Danley once worked as a “high limit hostess,” to members of loyalty club at Atlantis Casino in Reno. Kind of makes me wonder if Poker machines were the only thing he played,,