We've cruised 3 times (2 on the Wonder and 1 on the Magic). We have a now 14 ds. The first 2 times dh and I didn't really use the adult areas very much.
This last time on the Magic, it felt like we were childless because we never saw our ds. So this time, we used the all the adult areas. It was great.
I loved the entertainment series (only on the Magic), the rain forest, the pool, the adult shows and of course Palo (adult only dining).
We had toyed with the idea of cruising on another line because of the higher cost of DCL. The adult areas were what really convinced us not to book on another line.
DCL does an awesome job of keeping the adult area ADULT. I have heard many people say the other lines have adult areas too, but that it is not really enforced. At DCL, if a child walks into an adult area, a CM is there very quickly to take care of it.
There was only one time that this policy was not followed. This was at the Behind the Scenes in the theater. A lady brought in 2 kids between 8-10. No one said anything to her, they were not noisy. It really didn't take her long to figure out this would not be for kids.
At the pool, if anyone looks like they could be under 18, they will ask for id. Funny, they didn't ask me!!!
You can surround yourself with kids by going into those areas or you can go to the adult areas.
This is true with the whole Disney theme idea. Some people worry that there will be too much Disney. You can surround yourself with it or not. If you don't want to be over run with characters, don't go in the main lobby during the character greetings. But I must say, it is fun to watch all the kids with them!!!