More and more, campgrounds are realizing the benefits of adequate internet service. They are using Xfinity, Camplink, or other services to provide on site internet access through hotspots. In addition, most Walmarts have free internet for those who use Camp Walmart on their travels.
The secret to getting adequate or better service is using an external wifi antenna. Many electronics store have them, and they are listed on Amazon.Com.
My recommendation is one by Dreamworks. It's about the size of a book, and comes with a desk stand and a 25 ft usb line. Prices are around $40. I find that having it outside the unit works better, so I removed the desk mount and put it on a piece of plastic conduit pipe. I attach it to my mirror and aim it at the tower. In most cases, it works well enough to use Skype on my PC or stream TV shows. When parked at Walmart, I can get a signal from 400 feet away. Sometimes it helps if you connect a second pipe to gain height.
In camps where the nternet connection is located at the lodge, you can often get on site access if you have line of site access.