Nomadix backs up Hughes:Hughes Network Systems is building Wi-Fi networks in "leisure HotSpots," which means RV parks and marinas, using satellite links for backhaul. The network uses Nomadix on the backend so that users don't have to re-subscribe each time they roll into a new location. This should be a cool service for folks on the road and they may find that the probably slow service is better than nothing.
Reports from RVers indicate that bandwidth is generally scarce at parks, and the folks travelling -- no matter their age -- are actually heavy email and cell phone users. Providing enough bandwidth at these location is an actual problem needing a solution, not just a marketing machine message.
The best thing would be for these parks to find a way to blanket their area, and then have a few "wireless bridges" for loan so that the campers who didn't have Wi-Fi could have a device that they could just jack into their ethernet port on their computers. No configuration required.