If you are streaming movies (Netflix. blockbuster, et-al) on campground Wi-Fi and your computing neighbors find out.. MOVE.
If you much watch movies on the internet, Bring your own connection and expect to pay through the wallet. In another thread it is being ask, "How much bandwidth" Though most of the video I toss about the motor home (note, not over the internet, just the intranet (LAN, not WAN) is a different compression scheme but around a gig an hour is the most popular answer.
That kind of bandwidth use brands you a leach.