The snorkeling at Magen's Bay was nothing to write home about. The water was clear, but there wasn't really anything special to see. It's just a very nice beach. For me the best part is the milkshake place (located just outside Magen's Bay) called Udder Delights. They sell delicious milkshakes into which they will gladly dump a shot or two of rum. After a day at the beach, the milkshakes were deadly.
As far as meeting on the first day, we'll head for deck 10 as soon as the lifeboat drill is over. We'll try to stay near the aft section of deck 10 (near the stairs) so that we can still see the stage on deck 9 (where all the action is). I'll try to be as obvious as my family will tolerate (lime green ribbons, lime green DIScon lanyard, Towncrier button).
If you miss the opening get-together, you can always call the operator and ask to leave me (John Hayes) a message. We are assigned cabin 2585 and I seriously doubt that we will be upgraded since we requested adjoining cabins.
Something that we did on the inaugural cruise was to invite the other DISers on board over to our cabin one night after the show (we all had first dining seating). We ordered a couple of cheese plates from room service to go with a bottle of champagne that we had (compliments of the Disney Vacation Club). Of course, we were in a Cat4 room on that cruise, and it was a nice place to have a DISmeet. I doubt that a Cat10 cabin would work, but we could always take our cheese up on deck. Just another random thought. No complimentary wine on this cruise, but I'm sure that we could scrape something up to drink.