Just going to share my experience because it might be relevant enough to be useful to you...
We went July 5th-9th. We used MM on the first available MM day (we were there Mon-Fri). It was a complete waste of time. Here's why:
The days previous, which were NOT MM days, we got in line at the security tables 1 full hour before DL opened. On those days, we were first in line at the security tables. Our first hour in the park was great..we were some of the first people in the park, the crowds seemed very minimal for the first couple of hours and we got TONS done!
On our MM day, we also arrived 1 full hour before DL opened, which meant we were in line at 6am! We had to wake up at 4:30 am to make that happen. We got to the security tables and there were already 30+ people in line. By the time we were allowed in, the lines were FAR longer than they had been on the non MM days. We walked quickly back to FL as soon as we were permitted to, but still, our wait for PP was about 5 times longer than it had been on the non-MM days. Same story with Matterhorn, Dumbo, and Alice. FL was packed and uncomfortable.
If you're lucky enough to catch an already not-so-busy week, then MM would likely be great. But personally, I am loathe to do them again during any week where crowds are high. So much effort to get there so early (we have 4 kids), and when it came down to it, our lines were much longer than on non-MM mornings.
So, just food for thought. Maybe our experience was an anomaly.
