Yes, all major cruise lines provide pool towels for guest use, but the policies regarding how you obtain and return them vary significantly by brand. On "Premium" lines like Celebrity Cruises, towels are often placed directly on lounge chairs or available at open carts with no tracking required. However, on "Mainstream" lines like Royal Caribbean or Carnival, you typically must "check out" towels by scanning your SeaPass or room card. If you fail to return these towels by the end of the cruise, you will be hit with a "lost towel fee," which can be as high as $25 to $50 per towel. These towels are usually distinct from your white cabin towels—often being blue, yellow, or striped—and are also available for use on shore during port days. To avoid accidental charges, it is vital to ensure the pool deck attendant scans your card when you return them and to check your final onboard statement for any erroneous "unreturned towel" fees before you disembark.