SDMT is superior THEMATICALLY to SDD because of the setting, animatronics, the mine, etc. SDD is superior RIDE-wise but not thematically. BTMR is superior to both of them -- All just IMO, of course.
We had a FP for SDMT last month, which I got on 60+3, however, during our FP window the ride went down. The kids weren't going to wait in standby lines until the ride opened back up so I bit the bullet and used up the Anytime FP that it turned into for something else... the ride didn't come back up for at least 2 hours -- then the standby line was insane and I never was able to get another FP for it for the whole rest of the week (we had an additional MK day later that week). So we missed it. A bit of a bummer because the 38" requirement meant all 3 of my kids could ride, but we did lots and lots of other stuff all week so not an incredible loss.
If you can, rope drop it, or go right at closing -- we were not able to do either because by our 2nd MK day the kids were waking up later in the morning and not making it quite as long at night either.