They play announcements asking you to keep your mask on. One time whilst flying F in May or so the CA told me I could keep it off because I would put it on between courses. Other than that I pretty much always keep my mask on so no interaction about masks.

Looking at others, I’d say a decent number of people keep their mask on, too. At least during boarding. I like to sit in the mini cabin in rows 5/6 so I don’t really see many others.