cruise questions

We just got off Mariner-we did not need to reserve SkyPad (and could not reserve SkyPad) before or during the cruise. Just walked up when it was open-and rarely had a wait. For Laser tag, I signed up as soon as we were on the ship. It was offered twice and you could reserve one time slot in advance and try walk up for the second time slot to see if any openings left. Have fun!