I've been working in a small Maine coastal campground going on for 7 years now.
That has been the owners policy since I've been here- ie: 3 days minimum for Holiday weekends and that is for two adults and two children. One vehice with your RV- extra cost for additional velicles and kids/ or adults.
Some of the reasons for this policy-
The owner is dealing with a short season. School doesn't get out in Maine until mid-June. Kids go back to school in late August. Right now we have 3 campers (in a 44 site campground), this weekend coming up (Memorial Day), we are booked wall to wall- all tent sites are filled too- then the plug is pulled until school is out.
Mid june until the 3rd week in August looks good.
The season almost ends after labor day weekend.
The owner is dealing with a 3 month season, at best.
Extra people require the use of the campgrounds facilities, ie: toilets, water, sewer. Every gallon of water used here is accounted for to state inspectors watching our sewer treatment facility.
Another campground near us (The Little Ponderosa, ME) was closed by the owner when the state was going to mandate him to put in his own sewer treatment system- He said "no way"! I'll close the place first. He could never recoop his million dollar plus expense.
How can a business survive providing a great coastal lobster experience, the beautiful ocean, Kayaks, etc with such a short season? It also happens to Sporting events, large trade shows, and all major functions.
It's called "survival".
If you want this wonderful family experience of camping in a pristine, rustic campground in a picture post card setting, you gotta pay for it-
Oh, our ocean front sites are $50/day, plus 7% tax. Just consider your two day stay at $75/ day. Many customers booking our sites understand this policy and we receive hardly any complaints.
Good luck and I hope you can find what you want,