I'm getting quite nervous about being able to get a FP+ for 7DMT. I'm going to MK for 1 day so I'm not at all flexible with the FP+s. I just thought if the queue was good, it might help me not be so bummed about not getting a FP+.
Good luck and keep trying if you don't get it initially. Here's my take: the queue is pretty good, but not so great that you'll forget that you've been in line for 45, 60, 90 minutes or whatever the standby wait happens to be. If you DON'T get an FP+, I'd go to the park at rope drop and make straight for 7DMT when it opens. Do not stop to take pictures, do not stop to eat, do not pass go
That will keep the standby wait to a very manageable amount of time (probably no more than 30 minutes max).
Opinions vary but for my part, I believe 7DMT is destined to become not only a classic, but a very nostalgic one at that. Here why:
* for many kids, it will be the first memorable "roller coaster" they ride at WDW. There's Barnstormer, but I don't feel like it's particularly memorable
* even as an adult, I was absolutely enchanted by the ride itself. If you're fortunate enough to ride it a few times, there's tons of rich detail for you to notice each time you go through
* the entire area is pretty nicely themed, the worst is probably the entrance to the lines which are a bit "meh". Otherwise, it's pretty nice
* Snow White is a timeless classic and this ride has much of the charm of the movie built right in.
We loved Snow White's Scary Adventures and 7DMT, while different, is easily a worthy replacement for it in MK.