Dry camping

mdgalusza wrote:
Some of the sites I will be staying in will have no hookups, and I am there for 4-5 days. Where do I go to fill water tanks, empty gray/black tanks?

At the dump station, just because you don't have hookups,almost all Campgrounds, including State & Federal, have a dump station with a potable water fill available somewhere. Fill on the way in, and dump on the way out, you should easily be able to go 5 days, especially if you utilize the CG bathrooms & showers.