Relax folks, it’s a vacation. You can let your kids stay up later than normal, eat less healthy food than normal, not dress quite as nicely as normal, and even (gasp, shock, horror) let your 8 or 9 year old take a break by allowing them to ride or nap in a rental stroller during a long and tiring day. I can testify from personal experience that this does not cause them any lasting harm or turn them permanently into lazy couch potatoes, or have any negative effects at all on their regular lives. Do whatever works for your family and don’t worry about what the finger-waggers think.