On Jan 10 we were in line for Space Mtn. There was a group directly behind us including 3 kids, a woman, and two adult males. Both men had their masks down and were vaping the entire queue. Also one of the men was hacking his lungs off between hits - not exactly what you want to hear in a pandemic. DH really quickly told a CM who was stationed where the lines split, but all he did was put that group into the other line.
After we got off, we saw that group join several more people near COP, all had their masks down.