We just returned last week from sailing on the Conquest. We loved it too!! We are planning on going again in October.
Cozumel is fine and very nice, it is keeping all of the same itenery so don't worry!!
The pier is still under construction, so the ship does have to anchor out in the harbour, and you have to take the boats to land, but that is part of the fun of it too.
Enjoy yourself, have fun looking forward myself to sailing again in October.