No towels at either pool at the Fort.
But, if you are in a cabin, housekeeping will provide you with as many towels as you request.
The next question that usually gets asked at this point is whether ice is provided to guests, like at other WDW resorts.
The answer is no.
Ice is available for purchase. It's $2.00 a bag. There are ice vending machines at the comfort stations, or you can buy a bag at either trading post. The cabins have ice makers in the freezers, so you can make your own ice in a cabin.
Have a great trip.
TCD