I have done favors for families in the past but I soon find that one favor leads to another... and another and another an soon you are opening early every day for a familyor closing late. At first 5 -10 min late doesnt seem like a big deal but if you add in the time it takes to get the child ready and out of your house you are adding an extra 4 - 5 hours per month that you are working for FREE multiply that and that is over a whole FREE week of care per year.
So no I do not find it difficult not to bend.