I was down there about 10 years ago.
Don't miss Lobster town or village or whatever it's called, everyone will know what you're talking about. Excellent food and so cheap you'll be amazed. Every restaraunt is identical, so are the menus, go to one that's not crowded.
I suggest avoiding multiple story nightclubs, that swaying to the rythmic beat is not you, it's the whole plywood and staples STRUCTURE, no such thing as a building code.
Also Avoid:
Parasailing
Fireworks (although they are sold on the street, I saw a guy buy some in full view of Federales, walk to a deserted part of the beach, I mean no one and nothing wes around, and light a few black cats. He was dragged away by the Feds.
Drugstores
Any beverage without an ENGLISH label, and look at them closely, they are pretty good at faking it.
Watch getting there at night, it's a shitty little road with no lights and there were rocks and little landslides all over the place. It's been pretty dry lately, so you should be OK in that department.
Be SUPER careful driving through town, there is a 2 lane road flanked by very wide dirt shoulders, the locals, especially cabbies, drive in EVERY direction on the shoulders, it's very disturbing.
Good Luck.