Heading down to Playa Del Carmen for Christmas week with the extended family. I would like to get some diving in and I'm probably going to be too lazy to go over to Cozumel this time. (I've been a few times already.) A few of the non-diver family members would also like to do some snorkeling. Any decent dive ops that will take snorkelers along on the boat? I'm generally in favor of small boats with small numbers of divers (I'm a DM who has been diving for over 20 years, so I don't need my hand held), but I'm not sure if that sort of op would handle snorkelers. Recommendations?