We have started using the room towels, rather than luggiing our big beach towels along. We had always brought beach towels. They take up a bunch of space, and it gets old with them hanging around the room all week.
We always rec'd extra towels within a few minutes, of requesting them. Most days, we left a note for the housekeeper asking for extra for the pool. She would leave 9-10 towels for the 4 of us.