E.M.
All you have to do is feed your children the way you want to feed them. if you are going to be leaving your children with the in laws everyday then you should sit them down and explain how and why your child is to be fed. If you will only see them once in awhile then don't stress about it and keep in mind a little tv and cookies chips whatever is ok once in a while. As long as your children are not living the unhealthy lifestyle everyday it is alright. My son is only 13 months old i have never had him in front of the tv much so he shows little interest in it when it is on at other peoples homes. If you raise your child a certain way they will stick to it, but dont be to harsh in limiting sweets, my parents never allowed us to have candy and pop ever and it got to the point where that was all i wanted i would take all my money(from doing chores) and spend it on candy that i kept hidden from my family while i was in elem and junior high school. You have to find a healthy balance, so if you always have your kids eating well then let the grandparents spoil them once in while :) good luck