I could have written the exact same post with the exact same child. The problem I have is that they want the child in bed at 730 for their own quiet time thats why they don't want me to nap them. so by the time they are picked up from my house the parents have spent only 2.5 hours with their own child compared to the 10 hours I do. At 3.5 yrs old I would cut nap as most start to go to school, but not at 3 yrs old.

personally I wouldn't say anything, I know some won't agree but its just easier this way and parents sometimes just don't get it.