I was there just a few weeks ago and tbh, it's not appealing to pay in bitcoins when there are other viable and rather cheaper options to pay for your drinks like credit cards or those financial apps they have (Gcash, Maya). Also, it's a hassle to pay for something with bitcoin that you need to consume immediately, e.g. cocktails or any other goodies. They will have to wait 1 confirmation before they mark the sale as complete, plus the fact that you as the buyer will need to shoulder the fees.
It's good that the island is being marketed like that, but I don't think this will get traction in the long run.
You are great to have been to that place but I am not interested if the service is like you said, of course it will be very inconvenient and visitors will certainly look for ways with easier and cheaper payments, and I am sure they will use credit cards on average, so in the future they have to make a special way of doing transactions and free costs must be borne by them, So I am sure that later many will use Bitcoin, especially now that there are very many crypto users who vacation in various countries and places like this they will definitely visit.