I would recommend Royal Carribean for teens. Go to their home website, and do a "Quick Vacation Search". There you can put in the port you want to sail out of, and you destination, and a range of dates. I would start there. It will walk you through, all the way to a final price, with taxes and fees. The final price does not include insurance. They will offer you "Cruise Care Insurance", that is Royal Carribeans own insurance. Everyone sugguest 3rd party insurance. There are several threads on that if you are interested. You can do the same thing on "Cruises Only" website, but there you can search lots of other cruise lines to compare. I like those search tools. They give me an idea on itinerarys and prices. Of coarse, there is a travel agent. But, I like to scope out the different cruises first to compare. I am not sure if Princess has as much activities as Royal Carribean. I have only cruised on Princess once, and that was to Alaska, on an older ship. Good Luck. Lil' Lori