Personal Wi-Fi Hotspot devices VS Enterprise Deployed Guest networks

Last week I was performing a passive site survey of a currently deployed WLAN in several large hospital facilities in south Texas.  During the course of a week and entering countless patient rooms I validated an opinion I'd had for some time.

Out of the dozens of patient rooms I entered, at least 12 or so people understood what it was that I was doing and told me they were using the guest WLAN