After a virus infected my computer during a visit to a Good Sam campground, I vowed to never again use the Internet access at anyplace like that ever again, because the owners either don't know how to secure their network, or they don't care.
When we got home I visited our local AT&T store and bought one of their data modems and subscribed to monthly Internet access for $50. Now I use that modem when at home, as well as one the road, and I don't have to worry about security as I did in the past.
I'm sure other providers have similar equipment and plans, so I'm not trying to sell what AT&T has, but it has worked for us for two years now, and it'll probably work for you, as well.