The formula to calculate gross gaming revenue is quite simple: total player bets minus total player wins. GGR is the amount of money players have lost over a specified period of time. Gross gaming revenue is the amount of money players wager minus the amount they win. It doesn't include any expenses for the casino.
The minimum bet is RM10 I think but there are tables which impose a higher minimum bet. There is actually 2 casino in genting, 1 at First World and the other at Genting Hotel, First World is the newer one. Advice: Saved your money for others purpose. As my experience working in Genting casino, your winning % is low!