Q1. What is like for non-divers? Myself and my buddy are both U/W photographers, both wives are non divers. Are there any discount for non divers?
Ditto on what Jim & Steve said. I often meet non-diving spouses, family members, partners, etc. at SCC. The boats are very comfortable and the ladies might like to hang out on the boat, snorkel, sunbath, nap in the shade, etc. I think you can also pay for that per day if you wanted to, but I don't know the cost. Their boats are not the small six-pack boats you see buzzing around all the dive sites. They are large, roomy and comfortable and they all have a head. There's easy access snorkeling right in front of the resort too. Any chance they might want to try Discover Scuba? They could do that right at SCC too. There's also a small swimming pool and plenty of beach palapas and hammocks to hang out in the sun or shade.
Other things they might choose to do depends their desired activity level. There are some great things to see on a trip around the island. Some involve lots of eating and drinking, some involve water sports, some involve hiking & sightseeing and of course there's lots of shopping. There's a spa within walking distance of SCC where they can get massages and facials. Just down the street you can sit outside at Jeannie's Waffle House, sip cocktails, and watch the cruise ship tourists do SNUBA. Bring your cameras. Its hysterical entertainment!
I've done the "Wild Tours" jeep trip to the Mayan ruins on the northeast side of the island. It sounded kind of touristy at first, but we had a blast! You can also go to the many beach parks on the island, but they usually fill up with cruise ship tourists during the day. There you can rent jet skis, hobie cats, etc. You can also try parasailing. Chankanaab Park is nice if they wanted to hang out for the day or swim with the dolphins (a better deal than at the Dolphin place closer to town). There are a couple of places where they can rent horses, but I've never done that so I don't know how good that is.
Shopping in town can be just plain obnoxious if you have to fight the cruise ship crowds. I recommend going there on Sunday evening when its a family event at the square and all the local folks bring their kids out all dressed up in their Sunday clothes.
They can always go to a timeshare presentation (be sure to give them your credit card). That's not what I consider fun, but someone else might.
Q2. Does anyone know how to book from the UK? I may be being a bit stupid, but I an having a hard time finding an operator in the UK.
Another option would be to book direct through the Scuba Club Cozumel website. This will go to their office in Texas and they'll take care of the reservations there.
OK, enough ranting. Obvious we all love the place! Can I come?