Find My for iPad w/o cellular

Hi somebody just asked me something and I don't know the answer. If you have a iPad that only does WiFi, what happens if you misplace it somewhere or it gets stolen and you want to use Find My to find it? It can't connect to the Internet to say where it is unless it gets near a WiFi network it already knows.
I know maybe it can use Bluetooth if there are other Apple devices around, but that's more iffy. Iphones can get on the Internet with cellular and say where they are, but what about an iPad w/o cellular??