I don't go to physical casinos to play digital slot machines. They are same whether you play physically or on your PC. The real fun are around poker, roulette and Baccarat. There's where more people are and you don't necessarily need to play to enjoy.
I haven't myself gone much into a physical casino but here we need to buy a minimum amount of chips to enter which also includes a free drink. You can play as much and stay even if you are out of chips. Physical casino is much about being with people than gambling, at least for me.
I  enjoy gambling online. I could have different strategy and go martingale online while its possible in physical casino but it get awkward after some time.