Sounds like you are having a blast and seeing loads mate, that's why you're there, not for women.
I think you already figured it out yourself with your last but one post - escalating and move it forward quick or get the no, loads of girls in every bar.
Tophat a while back was talking about being a little bit creepier than you are used to- it's a perfect opportunity as you won't see any of these people again and there's several every night.
Try verbal/physical escalation try stuff that's out of your comfort zone.
Facebook- why go digital when she's still on the island ffs
tell her she's hot and you want to show her the beach in the moonlight whatever
Hopefully you'll get a better response than this and good luck