For a few years now, I've used the "Rogue Wave", I placed the antenna atop my Crank up TV antenna to give it some height. I just checked prices....wow, they've gone up! Anyways....it does just an OK job. It will take a weak signal and make it stronger but as pointed out, most campground Wi-Fi sucks anyways. If I happen to be in a Walmart parking lot while the wife shops, it does the job picking up Walmart's signal from where I'm Parked.
Once again, I think improving your Cell signal/Hot Spot signal is what I'm aiming for and the WeBoost will be in my future.