We are taking our first cruise with our 12yr old twin daughters on the Imagination. Looking for tips on what to pack, tips on Belize City and Key West (although we can figure out this one - Parrot Heat!). Just some simple general info would be GREAT! THX!!

There are some good packing tips under the Royal Caribbean section of this chat room - click on the lefthand column first, then look down the list for the topic "tips on packing for a 7-day cruise).
The kids will probably enjoy Camp Carnival, the kids' program - check it out when you board, if you haven't already.
With kids along, I would recommend booking shore excursions in Belize through the ship - make sure to check the list of offerings and sign up early for what you want, as the popular ones often sell out.
Have a GREAT time!!!