I just got back, and it felt like Disney was doing a good job of enforcement during the week and I saw very little non-compliance. However, on the weekend, when it got uncomfortably crowded as parks filled close to 35% capacity, there was much more frequent improper use. With the increased crowds, 6 feet was really not possible so it was a little concerning to see all of the masks below noses or off entirely. I also saw plenty of yellow shirted cast members during the week, but not one on the weekend when there are more people and more need to monitor masks.