I'm not sure how much the certification is, but you get one free resort dive as an uncertified diver. It includes pool training and one open water dive. Once certified, you get one 1-tank dive in the morning and one 1-tank dive in the afternoon as part of the all-inclusive. If you wanna do a night dive, it's $50, and is probably the best dive you will go on. We did a night dive in 2007 and it was easily one of our top 3 dives ever.