Lat year we went in the last week of November and the crowds we really low.
Longest waiting time was on Crush (40 minutes), Parachutes (25 min)., Santa - from 1 hour to 3 hours waiting

One day we did a walk after rope drop and that was our mistake. We were with two pushchairs and feeled not comfortable to run. Other people were running and I thought they are running to TM. I was wrong. We were near Santa's grotto 6 minutes after rope drop and waiting time was already about 1.5 hours.
Not the option for us with two toddlers.
So we did it next day. We were at the ropes first and were running really fast and there were only 10 families before us.
So the queuing still took about 35-40 minutes because it's a slow process.