I'm looking at staying at the Cozumel Palace in mid to late December. They are offering $1500 resort credit if you book directly through them, and part of this credit can be used toward a room upgrade. Has anyone traveled during this time frame and used the upgrade option? I'm afraid that all of the rooms might be taken during this time. We can't request an upgrade until we get there, and it is pretty important to my husband that we are in a better room.