We were in the parks this last week - Monday and Wednesday at MK, Sunday at MGM. We did not visit TOT, so I can not comment on that wait time. I would suggest MK was crowded from late morning onward until evening. Standby wait time varied from 50 minutes up to 90 minutes at Splash Mountain and Space Mountain, it was 20 -25 minute wait in the fastpass line. The Stitch ride ( and Test Track at Epcot) was even worse - up to 2 hour standby line and over 30 minutes in the fastpass line.
Some rides had 5 -10 minute waits, but at MK most E-ticket rides had at least 45 minute wait after 10:30 or 11:00 am. I would consider that moderately to very crowded.