Ideally, using a system like Ruckus designed for huge numbers of concurrent users. On a non-profit campground budget, deploying large numbers of AP's, planning channel usage well, and making ideal use of 5 GHz (where there is plenty of channels) as much as possible. The campground I did is also limited by a 10/768 DSL line. Believe it or not, even with hundreds of concurrent users it works very well.