Hi there, don't mean to barge in our you thread but I just thought I'd let you know my sister and I and our 5 boys are going on the Magic 7 day cruise on 4/4/09. We decided to get passports for the entire family for piece of mind. We have been on 2 cruises where people had to leave the ship for medical emergencies which meant they would have to fly back to the US, on 2 other occaisions people had to leave the ship to fly home because of deaths in the family and a very ill family member back home. In all of these cases if the person leaving the ship hadn't had a passport (book) they would not have been able to get back to the US. Even though it's a zillion to one odds of anything happening I'm sure, because of the incidents mentioned above we just don't want to take the chance.
As for Key West. Most of those pictures of Hard Rock, Sloppy Joes etc. are all on Duval St very near the cruise port and even the Southern Most Point is only about 1 mile from the ship. Parking is very difficult to find and expensive if you were going to rent a vehicle. I have always walked to everything even when we've stayed there for long weekends etc.
My sister has been to GC before and she and her kids still rave about sting ray city, so we are doing that but not through
DCL, I've hooked up with a private tour and they will take us out on our own boat and with a wave runner for the kids to ride as well (adults too). I read many tripadvisor reviews on the tour company and all were very positive, so I'm pretty comfortable with it.
I am still researching what to do in Cozumel, can't decide. So I will continue to research the next week or so but don't want to wait too long.
Sorry I rambled on. Enjoy your planning. That's half of the fun.