Grand Canyon is a professional setup. They know how to do things, while this is the most popular park in the US, they are very organized. Yes, we had to make reservations and we were camping in a tent 3 nights and had to change campsites each night. Plenty of bathrooms with running water/flush toilets, showers are in a central location close to the check in site, and showers were $2.00 for 8 minutes. Shuttles arrive frequently to take you where you need to go, or the marketplace is a short walk. We got our water refilled at the marketplace for free. Mather is a tent campground, RVs are at a separate site.