Hello Kpulle and welcome to the Dis Boards!
Travis and I are also a childless couple and have sailed
Disney Cruise Line (
DCL) four times with three booked for 2004. Needless to say, we're just as addicted to DCL as many on these forums! We're also hugh Disney fans, so that helps!
Over the course of four cruises, we've sailed at different times of the year. Twice in May, once in November (Thanksgiving week), and once in August.
We really didn't notice much difference in the number of children onboard. Although we've never minded the kids and actually enjoy being around people of all age groups. Disney does a great job of keeping everyone busy in age-appropriate activities.
The weather can vary quite a bit throughout the year, especially for the 3/4 day cruises to the upper Bahamas. In November,
Castaway Cay was quite chilly. Being Floridians, we're somewhat accustomed to warmer weather and water. The air temp wasn't too bad, but the water was way too cold for us to venture in. May and August had nice weather all around but this is coming from the context of seven day cruises on the Magic.
As far as not dancing or drinking, I wouldn't worry too much about that. Disney, as stated earlier, really does a good job of entertaining. Usually, we've found at least, that there is too much to do rather than too little.
We've also only stayed in indoor staterooms. We've never minded not having a port hole or verandah since we spend so little time in the stateroom anyway. It also helps us sail more often by saving money!
Hope this helps a little and enjoy your cruise!