If the park is along your route and you can get a space it is generally cheaper then the civilian RV parks. I have found that if you don't make long range reservations you may not be able to get a space. I would not drive out of my way (25 or more miles) to stay at a military base. Just my opinion. I use Passport America when it is along the route. We just completed a three month 6000 mile trip and I didn't pay more then 30 dollars at any park we stayed in. I use RV park review.com to find RV spots along the route and their prices. We ask,when we check in,for any discounts and almost always get 10-15 percent off. It is surprising hpow many places will give a discount just for AARP,military,etc. If you are a member of Escapees, they have many RV parks around the country that offer outstanding discounts. CHeck out VFW's AMerican Legions etc for many have a hookup on the property for a small fee and sometimes only a donation. Hope this helps you, please remember it is only my opinion.