We didn't take them, but I wish we had. We had one bad moment: DH and DD-9 had gone up to Deck 9 to fill the water bottles, while DD-6 and I had gone to Wavebands to meet the Dolphin Excursion group. While on Deck 9, DD needed to go to the restroom, so DH told her to go alone while he filled the water bottles. He thought she was in one restroom, she'd actually gone to another one farther away. He ran all over the ship looking for her, and we were afraid we'd miss the Dolphin Excursion (we didn't, but we were afraid). Wish we'd had a radio that day.