In the cafe you can instantly pick out the "neftyaniki", the oil workers, with their weather beaten faces, heavy clothes and the air of "don't messwithme" about them.
Thanks to that lucky star I mentioned, should my nemesis decide to drop by and messwithme, it is a highly manageable variety that the docs will be able to knock back with the drugs available.
Most people are far from networking experts (including me) and dare not messwith too many configurations outside renaming the SSID or changing the password.