My contract states that if my daycare is open then the fees are due. I use the analogy with my parents that if they have a mortgage they would not consider phoning the bank to let them know that they will be away for 2 weeks so they will deduct this 2 weeks from their mortgage payment. I charge the parents as if there are 4 weeks in a month, there are actually 4.35 weeks, so the days of the 4 weeks of care I bank for my holidays, so the monthly fee is always the same and they pay for my holidays as the days they owe me for.