Paul and his wife are traveling to Croatia Saturday and he's worried about data roaming charges. Leo says that international data is rapidly changing thanks to T-Mobile's free Edge data plan that started last year. As such, AT&T has changed from offering an expensive data package to a "day pass."
Google Fi is a solid option, because they would pay as they go at $10 a month. If they have a Google phone, then they'll be in good shape.