As a dealer I would not put 25 receivers in a campground for several reasons...
#1 You got the issue with having customers connecting and disconnecting receivers every few days. I do not think the owner wants to be bothered everytime someone sets up their camper or RV and can't figure out how to get the satellite working.
We are all technically savvy here, but generally customers are idiots when it comes to hooking up this stuff, and if they can't get it working in 5 minutes or less they tend to start asking for tech support and they first person they are going to take their frustration out on is the owner or person running the campground and demand someone come out there and show them how to hook it up.
#2 Receivers automatically deactivate after x number of days of not being hooked up to the satellite. Its bad enough your eventually going to start having receivers which will required to be called in for a re-hit, the other issue is going to be updating the software on all these receivers.
#3 Lost, broken remote controls and general wear and tear on the receivers. As a dealer I can tell you one drop of a DISH Network receiver and the plastic clips that hold the face plate to the receiver usually snap. Taking a deposit might work, but its just gonna be an issue when something like this happens and the customers try to claim it was like that when they got it.
#4 When you trunk DP 34's there must be 1 receiver active on each switch to power up the remaining switchs in the trunk. One DP34 down the line with no receivers, will disable all other receivers down the line. You really need to use DP44's at this point and be able to permintly plug in the power inserter on each one of them.
Simplist solution here is to do a 15-20 channel headend, with some of the following key channels...
1 ABC
2 NBC
3 CBS
4 FOX
5 UPN
6 WB
7 PBS
8 ESPN
9 FOX SPORTS
10 DISNEY
11 NICKELODEN
12 CARTOON NETWORK
13 LIFETIME
14 WOMENS ENTERTAINMENT
15 CNN
16 DISCOVERY CHANNEL
17 LEARNING CHANNEL
18 USA
19 OUTDOOR CHANNEL
20 STARZ Movie channel
21 STARZ Movie Channel
So the campers don't have the selection, but are they going camping to enjoy the outdoors or watch TV?
Also with a headend its 1 cable and the customers plug it in the back of their TV and they are good to go.
Other than that, the Dishstore can design this type of system along with the distribution system.