It works great if you're a small group that stays together all day and comes back to the resort at the same time. At the time we did this (I did it on 2 different trips) our kids were younger and we all stayed together all day so I got back to the resort with everybody else and could go in the women's locker room and retrieve our mugs. If I had decided to stay behind at a park while my husband went back to the resort with the kids, he wouldn't have been able to get the mugs...though he probably could have found someone to take the key into the locker room and get our mugs. Now that our kids are all teens/adults, we tend to split up during the day and don't always come back to the resort together so it doesn't work for us anymore. But it was definitely a lifesaver (and worth every penny) to do it when the kids were young and our room wasn't close to the food court.