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My question is whether we as consumers/paying guests/etc. can configure an AP so that it provides us service and yet flies under the radar enough to be immune to these lowly tactics on the part of scummy businesses like Marriott.

Obviously one can turn off SSID broadcast, which helps a teeny tiny bit, but I wonder just how far one would have to go to fly under the radar of most of these WiFi attacks and countermeasures and just use your own damn equipment and services without interference.

Naturally if you're transmitting at any frequency at all, SOMETHING can find you, but if you obscure your protocols and frequency enough it should be doable. The only question is how much is enough and how hard is it to do...