I have had problems with the Wi-Fi wireless link that I overcome many times with a repeater. The repeater I use is used inside the coach without any external antenna. While travelling in Canada I was unwilling to pay VZ's foreign data charges. As others have stated, a repeater can't fix a problem with the campground's internet access.

I also use a VZ 4G phone with Mi-Fi capabilities. It works well in 4G areas, but my wife's 3G version of the same phone works MUCH better in 3G areas. I even changed my phone out and the results in 3G areas is the same.