As of right now, I am doing great with the families I have. My full timers (2 siblings) have wonderful parents, even if I don't alway agree with their parenting skills, hahaha. They pay on time, I rarely need to remind them. Only late once since starting in October, and no problems if I need days off, etc. And my 2 part-timers are the same. Sometimes the drop-in parents "forget" to bring me money, but they always have it within 24 hours for me.
I had a couple of kids after school, and it was their parents that there were issues with. One family dropped off early (we had an agreement) and STILL picked their kid up late almost daily. We had to have a discussion about that! They also just didn't really care. This is the same family that didn't tell me the boy had ADHD, and was medicated as such. It didn't matter that he had it, but I was ticked when I found out they hadn't disclosed that. But funnily enough, both of those families ended up not needing my care anymore! I guess it just works out sometimes! Now I have a wonderful group of parents and I am grateful for it.