The best bet would be to rely on two cell services. I would probably pick a large AT&T data plan for the lager service area as well as the...
They throttle the teathering component after 7GB if you have a phone on an unlimited plan. There's some apps you can use that can get you around...
20GB a month at AT&T is $150 I think. If you go T-Mobile, it will be cheaper and their expanding presence has made their service a lot better than...
If you go to another country, just buy another sim for that country assuming they are using the same bands.
