I am always reading about WiFi.  Sometimes it seems that is all I do.

Below is an interesting article about how simple changes in a WiFi hotspot can have a negative effect.  The article is talking about an office WiFi network and how Christmas holiday decorations can have a significant impact on their wireless LAN.

If simple, inocuous decorations have that kind of effect in a controllable environment like an office, imagine the effect of the constantly changing environment at an RV park offering WiFi. 

http://airmagnet.com/news/press/news.20061205.htm

In most cases, it is up to you, the end user, to overcome the obstacles to achieve reliable connections.