Here's a related question.
Do most of the dive ops all go to the same locations? Or does it vary according to different factors? ie. group experience, pick up location, conditions, etc.
I've got about 6 dives while I'm there and I want to make the most of them!
John
We all have access to the same sites. Some shops don't visit certain sites due to the distance, others charge extra for those sites, and some don't charge anything more...but reserve those sites for their multi-day divers.
Some shops have set schedules, others use the democracy system...ie: divers on the boat get asked where they want to go and everyone gets a vote...majority wins barring any unreasonable requests, conditions prohibit, or experience level of divers isn't suitable.
The truth is that there isn't really a bad dive here and no reputable shop is going to take you on crappy dives intentionally. With it being your first time here, I wouldn't worry about it too much....whatever sites you do will most likely end up with you anting MORE and planning your next trip before you even leave the island
As long as you're not banking on Devil's Throat, Barracuda or Maracaibo in your very limited three dive days...yuo will be happy and get some great dives in. If you're lucky and have the sufficient skill set, you may even get to one of these sites!