I can see where kids and teens would really like it.
DQ was included in our UMP's so DH & I went there last week for a few hours. We didn't cover nearly all of it. We wouldn't pay to go into it, but I can see why it is popular.
I think we partly didn't care as much about it because we had been in a park all day and were winding down. (We arrived around 7 - 7:30 at DQ.)
The only complaint I really have about the whole DD area is that is where we spent more time than any place else at WDW waiting and riding buses, or making pit stops along the way.
If you have your own car, it would be much easier. Otherwise it is a big time waster using the Disney bus system returning from DD to the resort.
That first night (at DD leaving DQ) I bet we waited AT LEAST 20 min for a bus. Maybe more. And it was nippy out. It just made the day seem longer.
The other times we spent waiting, riding and stopping along the way. Allow a lot of extra time for that. To me, that made the whole DD area not worth it
AK : Lions, Tiggers & Bears! Oh My!