[Gremlin]

Margaret, all the laptops I have had, probably seven or eight, have all had either a small switch or button on the keypad to turn Wi Fi off.
You can see a Red Cross over the wifi symbol on the bottom right corner of the screen when it is disabled. If you decide you need it all you do is press the switch again.
But a switched off laptop emits less radio activity than an normal human brain and that's the last thing you want turning off.
Hopefully.