- Look up their "personal item" size limits. It is bigger than you would expect and you can carry on a lot of your luggage that way. I left room for my purse and stuck it in before boarding, then pulled it out after I was seated.
- Share a bag. after filling our carry-ons, Boyfriend and I were able to fit everything else we needed in one suitcase so that we only had to pay for one checked bag.
Obligatory panarama of Miami from the ship.
We only did one excursion called "snuba." Snuba is a combo snorkeling/scuba diving where you are essentially just snorkeling, but they hook you up to a tank that is in a raft on the surface so that you don't have to come up for air or hold your breath. The guides take you in small groups and pulls the air tanks along with the group as you go around in a circle below the surface.
Many, if not all, have a "Serenity" deck. This is a 21+ only area which is, not surprisingly, very popular. If you want to enjoy it the most, try to do so on port days before everyone gets back.
Specific things-of-note for the Vista:
IMAX theater: Worth going to at least one, but you have to pay standard IMAX pricing.
One more thing to consider is paying for either of the two drink packages. There is one for unlimited soda/juice and another for drinks- which isn't unlimited, you can only get 15/day.. We went with the soda package and got liquor duty-free, but decided that it wasn't worth it. To get sodas you have to go to the bar and you can only get one at a time. They will give you the soda in the can but they have to open it. We opted-out of the alcohol package since I don't drink that much and Boyfriend drinks mostly beer. If you are all about cocktails then it may be worth it, but if you expect to drink mostly beer, they come in at about $5 each and the package is $50/day.