@CAGB33
I know you don't want suggestions, but.... something does not add up.
You are describing video shops where you are expected to also do a write up and edit your own video. You should be getting, at the very minimum, $60 per shop for that - if you are not being given any sort of extra money for the travel required. You also should not have any problem adding as many gas stations as you want along your route - unrevealed shops typically take all of ten minutes. You should be able to get at least $10/shop plus $5 gas for each.
Let's say you are doing four video shops a day plus five gas stations. (I would consider this a pretty light load for a full day of work.) $60 x 4 + $10 x 6 = $300. Plus, you will be reimbursed for $30 in gas. If you are driving something new and small, this should cover nearly all your gas, You should be able to eat and sleep at less than $150/day. This puts you at $150 profit per day of you trip..... A step further. You should be able to get $80 for the video shops you are describing and $15 for the gas stations (if not more!) This brings the daily income to $410.
What sort of gas mileage are you getting with your camper? If you have a larger vehicle and are pulling a camper, you could be getting as little as 7 mpg. If this is the case, it might be worth your while to rent a vehicle that gets 35-40 mpg and using some of the extra money to stay in an inexpensive hotel with wi-fi. (at $3.50 per gallon and 500 miles of driving, the difference between 7 mpg and 35 mpg is $200.)
I'm not trying to be overly-critical of you, but something is not right with the money you are making for the work you are describing. If I spend a full day shopping, I make sure I profit $300. On my recent overnight trip, my profit averaged better than $500/day - and I didn't do any gas stations. Are your shops spaced so far apart that they do not make for a good route? Perhaps you should be breaking it up into two or three day routes? Should you be asking for more per shop? Are you spending too much on gas? Are you finding other shops along your routes that would make these routes more profitable?
Hard work builds character and homework is good for your soul.