I guess I really just don't understand the 7 and under thing? Once my kids were potty trained they never had any more accidents or sudden urges than a teen or adult. DH and I always have to go to the bathroom before the kids. (We always joke that we drive 23 hours to FL and have never had a child ask to stop, because DH or I have to stop less than every 2 hours.) If anything, the adults in our family would need the diapers not the kids. 
