[EHaskins]

Personally I think trying to enforce non WiFi rules is pointless, so yes people will have laptops , phones , stadium networks, networks from nearby buildings, etc., I believe the intent of the rule to limit interference as much as possible by limiting the numerous team run networks which are in the pits every year.

As for the WPA configuration time, any transmissions you generate will be negligible compared to those of a network being actively used to transmit data.