story
I don't think contactless Apple Pay actually uses device geo[1] for authorization, but it's still worth noting that iOS devices without cell connectivity (ie WiFi-only iPads) don't have GPS anyway.
You can use Apple Pay on websites in Safari, though, which IIRC doesn't require location permissions to work.
1. You have to be able to use it in the same places you'd use a normal card, which means you can't rely on network connectivity of any kind.