The towels at the pool are fine and I'm sure you'll remember where you're sitting unless you're at SAB, and that one is a little confusing. I find it depends on your resort too. At value resorts, you have to bring the towels from your room and get housekeeping to replace them. At moderate resorts, there are only towels at the main pool, but not the quiet pool. At delux resorts there are towels at both the main pools and quiet pools. I'm guessing that is still the same and hasn't changed. (I'm sure someone will chime in if this info is different now.)
OP, even after a couple of margaritas I still can manage to find my chair, I'm sure you'll do just fine!