Yes fuel and lodgings are the two greatest expenses when in travel. We always stay at Campgrounds when in travel pull through, full hook up, 50 amp. We leave for Florida in a couple of days and it will cost us near 500.00 in fuel and Campgrounds Northern Ohio to the Orland, Fla area
When in our "can we afford this phase" 14 years ago we took that into consideration. We are still good but it gets more expensive every year..
On a side note we do keep track of mileage traveled. We have traveled over 146 K miles since 2006 and covered all 0f the lower 48 states and a couple of Canadian provinces.