"Don't get me wrong I don't think what the hotels were doing is right but I think there might be some other issues to consider."
You're right in your other comment, that some WiFi networks can be so delicately set up, that while not quite a house of cards, an influx of new unexpected access points can throw a spanner in your works - that's probably why the de-authentication packets were created.
However, that was NOT the case here. It was purely a legal "loophole" that let you shut down unrecognised access points that did not involve jamming in it's own definition. Note, they can't and won't shut down 2G/3G/4G cellular connections, because, the only cost effective way to do that is jamming, and that's defined as illegal. However, if they *could*, I assure you, they very much *would*.
After reading more about this, it appears insuring yourself against rouge deauth packets is either impossible, or nearly impossible.
This is a huge hole in WiFi capability. It's nice the FCC pulled their finger out and addressed it, but that's only in the US, it's going to take many years if at all, if this does the rounds in other parts of the world.