I went on a 7 day cruise to Mexico, Belize, and the Bahamas. I went with 4 of my closest friends from WPI and we had a blast. We spent most of our days laying out by the pool on the top deck of the boat. At night, we attended comedy shows, bingo, karaoke bars, and obviously all of the different food options. 
However we did get off a boat a few times to do things like bike, kayak, snorkel, go to beaches, and touristy shops. My personal favorite was the boat stop in Costa Maya when I went biking and kayaking. The kayaks had clear bottoms so that we could see the ocean floor. Then we played beach volleyball and laid out in some hammocks by the coast.
It was the best thing I have ever done for Spring Break. Normally, I would just drive home to NC for the week, which is fun but this was certainly a great way to begin the celebration of my senior year coming to an end.
But, now its back to reality. Dterm has officially begun, and its my last 7 weeks at WPI... weird.