I would make a note so everything is in writing stating that the daycare will be closed on Friday, June 7 and reopen for normal daycare hours on Monday June 10.
If you have paid vacation days in your contract then include that in your note. If not then you could also stipulate that in the note saying the fee will be deducted from payment for the following week or whatever.
My point in handing out a printed letter to each parent is there is then no way that a family could come back on you next week saying that they didn't know.
Once they have been told daycare will be closed that is all you have to do other than enjoy your time off. We are not responsible for our daycare families beyond that.