Well went on my first "international" trip this week, all the way to Canada. First off, it's ridiculous that AT&T considers Canada an "international" market on par with say, Bolivia. But that's neither here nor there. So I was only going for a one-day trip and decided to get a 20MB plan. Yikes! I will caveat my comments to say I get corporate email on my device, so that certainly skewed the results, but I whipped through that 20MB in only 8 hours! Once I got down to 3MB left I turned off my corporate email, but then made the mistake of using Google maps for a few minutes and a FlightTracker app, and when I got done using just those two things I found myself 5MB over! Unlike their domestic plans, AT&T gave me ZERO notification that I was approaching or going over my data allotment. WTF? Moral of the story: the iPad uses a TON of data, even if you use just basic things like Maps. If you're going on anything more than a 4 day trip I doubt even the max 100MB plan would be enough.