Leaving Leave whenever you feel like it. You never have an obligation to stay at the table, even if you've won a fortune. You should definitely leave if you are tired, losing more than you expect, or have other reasons to believe you are not playing your best game. Depending on the cardroom, you can redeem your chips for cash with a chip-runner or floorman or at the cashier's cage. House Charges Last but not least is the matter of the house take.
Somebody has to maintain the tastefully opulent furnishings and pay the electric bill.
The house will choose one of three ways to charge you to play. This method charges all players equally. If the pot is raked, the dealer will remove chips from the pot as it grows, setting them aside until the hand is over and they are dropped into a slot in the table. This method favors the tight player who enters few pots but wins a large fraction of them. If the chips do play as a bet, this method also favors the tighter players, but not nearly as much as the rake does.