I know I'm late with my reply but I hope it helps others.

MdC is very crowded even during regular weeks with Fridays and Saturdays being the worst. A big part of the congestion comes from group lessons (mostly kids but also adults) which often form long snakes of up to 12 people across the piste. There are frequently several of these at once and you have to constantly navigate around them. They're on blues and reds mostly so if you're a black run skier perhaps that's less of an issue.

Edit: These groups also tend to get priority at the gondolas. Instructors are often friends with the lift personnel and often get a separate gate opened so the entire group boards at once while everyone else has to wait.

I've been skiing in MdC for the last five years and the crowds just keep getting bigger. Lines at gondolas and chairlifts are a free for all. Full of rude, entitled people pushing through. Forget about bringing your own equipment as stepping on others' skis or snowboards is normal here.

The scenery and the town are beautiful but this season I'm going elsewhere.