I'm trying to decide what to do in Nassau, too. I may go over to see Atlantis, but I may just wander around a little bit and go back on the ship. In 2006, I took my teen over to hug dolphins at Blue Lagoon.
So, no excursions probably for me. I'm just so excited to hang out on
Castaway Cay with no pressure to be anywhere at any specific time. Last trip we did feed the stingrays; you can tell it was a trip for my animal lover with stingrays and dolphins! We came back in 2007 and went to Sea World and Discovery Cove. This trip is for me, just to enjoy the sun and the water.
And, no Palo or Remy. I don't think it would be much fun by myself. We did Palo brunch our other cruise, and it was yummy and such a pretty view. I'm not worried about having enough to do; Disney has the best activities, and the ship will be fun to explore.
Edited to add: I forgot to mention that my 19 year old enjoyed the hot stone massage, but she did get talked into buying a lot of stuff from the spa! I don't do spas, so I didn't realize they would try to sell her on the stuff they use.