I second on going snorkling with Alfonso. If you get a chance, go night snorkling with him. It's absolutely amazing, if you are up for an adventure.
Crazy Canucks-great hang out on Monday night. And please, try to visit Fido's.
Most of the local restaurants we have eaten have been great. There is one place, Waraguma's, on Middle Street. If you blink, you may miss it. It's South of Elvi's kitchen (going towards the airport on the right. Two tables in the front. She has the best lobster burritos you have ever tasted.
I haven't been inland much, so good luck with you research on that.
You look like you will have a great time and fit in just well.