Still have to go check out towels for shore excursions on the cruises I've been on. In fact, on Monarch they had a towel station on deck 4 early one morning for those that didn't want to go up to the pool deck.
Maybe Ester is taking such great care of you that you didn't notice she picked them up
. OR, maybe it's a D+ perk that they provide them in the rooms for shore excursions