I'm in Canada. I told this to Verizon nearly a month ago and they told me they could switch me to the Nationwide + Canada plan for any period of time I wish, same price.
Buuuut... that wasn't true. It's $20 more. Fine $20. I can pay $20. It is another country after all. But as soon as I crossed the border I get a text telling me that i'm data roaming and it'll cost $2.05/MB. So I stop driving and call the 900 number in the text to confirm that this message only applies to non-forward thinking people who didn't switch plans. Of course, NO. My switch only affects voice and text. The outrageous data charge applies, I'd been using Google Navigation for 10 minutes when I got the text, but I can purchase a plan of 100MB for $25. Bastards. That would be on top of my normal data charge. So I'm going to go without data on my phone. Therefore texting will work better than emailing for a while. Or just call
Also, gas costs 1.29CAD per liter and I accidentally booked myself into a place next week just south of jasper that I thought was a bargain only to discover it is a primitive hostel and has no showers or flush toilets (just drinking water and water for cooking)
This may be just one week and then back to the USA.