My son was born on Oahu, and we traveled with him all over when he was a baby. If you have a stroller, you really won't need anything else. The room should have a pack & play, so maybe if you want a real crib you could look into renting one. I always just changed him on the bed. I'm sure you'll be bringing a few small toys. You can bring a pool float and blow it up there. Definitely bring a sun hat!