Just like WiFi on the ground a WiFi router is used that your device can connect to.
This router gets its internet connection by microwave radio link (probably from an orbiting satellite).
if the plane has wifi yes
It depends on the airport your flying in. Most cost money. I'm not sure how much.
Yes. If the plane has wifi you can get online and purchase the shoes.
no because its a air oceanic plane so it doesnt offer wifi
It will work without wifi, yet you need wifi for the store and setup
Possibly. If you take your computer on a plane with wifi and when your airplane is in another country and the wifi works, then yes
Yes it is free with wifi. But will not work without wifi connection.
it has a chip similar to that in a laptop modem for wifi
you have to go to the wifi settings and set it up
no it does not but if you have wifi it will work
Basically yes, any laptop with wifi capability and within wifi network will work. Other factors might contribute, is the wifi has public access, can you connect your laptop to the wifi network available and might be the wifi network required certain fee access that you may or not willing to pay.
yes >>wifi<< iPad means built in wifi, so you can get wifi on another planet.