If I'm reading the OP's message correctly, he needs to improve his reception of the campground's signal. The easiest solution may be to talk to campground owner/manage and see if they would be willing to install a repeater. Otherwise you need to find a way to improve your reception. You might want to look into a wireless network card that has an external antenna. You might also be able to install your own repeater assuming the campground would approve of the installation and you can find a dry location to establish a good signal with the base station. Many routers, access points, and print servers can be configured to function like a repeater so you don't have to spend a lot of money.

Don't put a bunch of different consumer-grade WiFi routers onto the same system. They are really not made for this configuration and things will never quite work right. And yes, that includes things like Apple's WiFi products, the router that you got from your ISP, or random expanders. The suggestion to use a WiFi mesh system is much better. If Orbi can handle the 130ft, then that would be an excellent solution. In practice, that will depend a lot on just how noisy the radio channels are. In a densely populated city, consider yourself lucky if you can use one access point per one or two rooms. The noise floor is simply too high to reliably do better than that. Where I live, I currently see between 300 and 500 access points at any given time. No wonder the noise floor is so high. On the other hand, out in the countryside, the noise floor is almost zero, and a single access point could serve multiple houses if placed in a good location. If Orbi doesn't work, then look at Ubiquiti's Unfi line, instead. This is the solution that many small offices and hotels use. It'll cost you more up front, and you might have to buy more individual parts, as it is a very modular system. But I guarantee you that it'll work fine even in the most adverse environment. You'd probably need a CloudKey, a security gateway, a couple of access points (even the smaller ones are great, but the long-range ones might work particularly well for you), either a few mesh access points or a building-to-building bridge, and possibly a few of the smaller switches. Configuration is a little more complex, but once it's set up, you won't need to touch it again. The downside is that for a larger property, you could end up paying a little over $1000 in parts; possibly up to $2000 for more complicated topologies. But you'll end up with a rock solid networking experience. So, I'd say, try the Orbi first and make use of Costco's great return policy. If it doesn't work reliably throughout all the property, then get a Unifi system instead.

For our build, a 1-story with unfinished basement, I had a conduit drop from every wall of every room (well, except the bathrooms) into the basement. I ran CAT6 or coax only as required. Plus a CAT6 run to multiple places in the soffits for eventual cameras (which you don't want to run via WiFi), so I don't have to climb in the attic as I install cameras. If you plan on sticking with mostly WiFi, which is indeed getting more viable, consider where your primary WiFi access point (AP) will be, which is likely close to where your internet feed (cable, fiber) comes into the house (basement? utility room?). From there, consider running CAT6 or conduit to a couple of places where you may need secondary WiFi access points. For example a den or office or loft. That way, if you find your WiFi signal from the primary AP doesn't reach where you want, you plug in a secondary and extend the range. For us, we had the "low-voltage guy", who was installing the alarm system (and central vac in our case) do all the CAT6 & conduit runs. Cheaper than having the electrician do it.

cobalty, the features you describe as essential to you are ones that the vast, vast majority of consumers neither know anything about nor feel the same way about. I'm not an engineer or a tech person but I've spent my adult life in Silicon Valley and it's hard to out-geek me so long as a discussion doesn't get deep into the technicalities. Backhauls don't need to be wired. Latency simply means delay, not speed, as I'm sure you understand. For the vast, vast majority of internet users, the greatest factor impacting latency is the signal pathway to/from the internet after leaving their homes. And, for this same vast majority, their normal internet use is wholly unaffected by latency. As I'm sure you know, what ISPs and equipment companies describe as internet "speed" is really capacity - how much the truck can carry, not how fast the truck is travelling. Internet signals travel at the speed of light- congestion, distance, and equipment processing speeds, among other things, are what contribute to latency. What better way to limit a teenager's time wasted playing games than to have equipment that offers only limited or moderate response times because of latency. People I encounter who proselytize for Linux take a similar approach - look at all the things "my" approach offers and your's doesn't. Except, how many of those things does the buying public think to be essential or are able to deal with as the softrware and hardware require? Answer- few or none. Home IT equipment is a plug and play ecosystem. To the extent possible, products configure themselves with onboard setup software. They're shipped with programs consumers can use to receive setup steps and configuration items that can't be automated - to enter passwords, etc. Few ever access access the innards again. If you ask someone what the password is to access their router, the response will usually be incorrect, responding with what the Wifi password is. Often that even needs to be looked up or was written on the bottom of the router. And Wifi passwords? No, they don't know how to change them or set the channels used. It's why people buy iPhones instead of Android ones, Macs instead of PCs, iPads instead of competing ones. . They want to use the technology without having to setup, configure, troubleshoot, adapt or fiddle with it. I have no doubt the equipment you prefer does what you want it to and that's great for you. If the market found Ubiquiti's products as compelling as you do, they would be more than just the very small player in the marketplace for home equipment that they are. They're not more and I think enough said. I do agree with the suggestion to give thought to wiring for things like cameras. The rest of it is optional, the world runs on Wifi these days and the infrastructure equipment that serves it is more than up to the task.