they comped me a room, etc,
1. John Grisham's "the Summons":
--------- He loved a good funeral, hated weddings though.
--------- I love weddings,
--------- Four or five?
--------- Four, and counting.
what does "counting" mean here?
2. talking about casino:
---------- How did you do?
--------- I won a couple of thousand at blackjack. They comped me a room.
--------- I paid for that damned room. Probably the whole floor.
--------- I love their free drinks, twenty bucks a pop.
what does "comped" and "pop" mean here in the dialogue,
thank you for your help