"Caves & Snorkeling" in Progresso?????

[mpalmer]

Has anyone taken the "Caves & Snorkeling" ship excursion in Progresso? I'm leaving on the NCL Dream on Dec. 16th. We've already signed up for it, but I haven't read anything about it on the forums. And the ship gives you so little info. We really didn't care to visit the Ruins, and this seemed like the only snorkeling option out of Progresso. I've read about the cenotes, but I don't know which ones we're going to. Please Help....