If you are looking for a PADI certified shop definitely contact Larry Parker of Reef Divers. My husband and I spent 2 1/2 weeks in Dec and Jan and got certified through his shop. Our instructor was Lorne and he was fantastic we did the whole course in 4 days. I was scared to death through the whole process but Lorne was amazing and allowed me all the time I needed to become comfortable with the whole process. Safety was his first concern. Enjoy your trip you will love Ambergris..