The Easter Monday is listed right in my contract and before the holiday I send out a newsletter reminder about 4 weeks in advance reminding parents I am closed Easter Friday and Monday and that they are paid stat days.
Never have heard a peep or complaint from a parent about it. Half my parents are off that day and half aren't and take it off as a vacay day. Most daycare providers in my neighbourhood take it as a paid day off (that I have talked to).
Oh and of course the Good Friday and Easter Monday stats only apply to parents who would have been scheduled for those days