If you take a computer, save yourself some $$$ and use Wi-Fi. Data plans are expensive, especially when they include teathering to a computer. Free Wi-Fi is available in almost every town (in the East, anyway). The only problem I had was public libraries in Pennsylvania. PA might be the cradle of our freedom, but their library Wi-Fi is locked down tight. Crazyguyonabike was locked out at all 4 of the PA libraries I tried. Every Starbucks I tried worked. McDonalds was OK, but a couple of them had busted Wi-Fi. Small coffee shops were a good bet.