Do yourself a favor when you get here and don't advertise the fact you have never traveled alone before ....... you may attract a creature or two that thinks they can take advantage of you. Just relax and enjoy.
My suggestions for a safe and happy visit - go snorkeling as often as you can, stay out of the roughneck bars, get up for the sunrise and go to bed early, volunteer to walk some dogs for Saga Humane Society, attend the wine-tasting at Wine de Vine, bring some excellent books for hammock-time reading, take some classes at Zen Arcade. I hope you have a fabulous time ....... !!