We tend to buy a ton of fruit and eggs. We have breakfast in the room but if we were at a hotel would get the breakfast option. I boil a bunch of eggs for snacks. Slice a bunch of mangos and pineapple each day. I also bring a little folding cooler. That way, if we are at the ends of the island, we have food to eat between dives. We may take enough to dive three tanks each. Stay a long time with surface intervals. Snack on fruit/eggs, maybe some sandwiches. Vegetarian options are much cheaper on the island than meats from the grocery.
On the way back to town, depending on if we dived north or south, there are often options to eat off the beaten track at small places with local fare.
We tend to dive the ends of the island, north and south.
We come back to the condo (rented buy-owner), rest-up and gear up for a night dive. After our night dive, we either have food that we fix in the room or go out for something easy and close to the condo, typically pizza or Buddy's.