Totally agree with Lee-Bee.
Schoolagers do cost a lot more to have for a full day than little ones. And I find they are easily bored no matter how many activities you have for them, which can be frustrating.

Also, I do not give any discounts for vacation, schoolage kids (for full days) stats, ect. If I am open and working, I am paid accordingly. If it is a stat, I am paid for the day just like the parents are paid for the day.

These parents sound like some of daycare parents that I have encountered through the years. You give them an inch and they take a mile. Once you start giving discounts and doing favours, they will always ask for more. I would definitely find another family.