Is the $25.00 park admission for seven nights or seven days? Does that make sense? We are going to be visiting Yellowstone and staying in the park for 4 nights and then traveling to Grand Teton for three nights, staying at JLL for 3 nights. I would like to drive back home through Yellowstone, but I just now realized that would technically be the 8th day. I am wondering if I need to pony up another $25.00 for a quick drive through, to go out the Cody entrance. Or will I have to anyway because I am at JLL? I just figured if the pass was for seven nights, that would actually be eight days and then I would be okay? Does anybody know?