Well, we had the EP today and the wait posted for MoM was 150 minutes this evening around 5. We got to the ride vehicle in 35 minutes with ep.
A family who got on with us said they waited 3 hours in the regular line.
They did check for ep in the line either 3 or 4 times.
Overall, the waits with ep today were about 1/4 that of the posted wait.
The Mario ride lines included.
Did not ride carousel, yoshi or stardust racers.