I used to charge $25 flat rate for before/after care. I had a certain amount of paid holidays in my contract in addition to all of my stats being paid if child normally attended on that day. I charged a full day preschool rate if they needed care on PA days or school holidays. In my case that was $45. I did up schedules 6 months in advance based on school calendar and took post dated cheques for those periods. If I was open for days on the holidays then they paid their regular daily rate regardless if they attended or not. The premise is the same as for a full day child, that you are holding the child's spot open regardless of attendance.