I have no idea of what I can do in the sauna.

Hint 1 of 4:

Polyester clothing does not have a chance in the steam room.

Hint 2 of 4:

Find a locker and change.

Hint 3 of 4:

Make sure you don't drop that towel.

Hint 4 of 4:

I know you didn't have any since Patti, before the bamboo forest, but be
patient. Talk to them.