Terms and facilities of a roaming package. Where can I find them? I am thinking of adding roaming for a trip to Mexico. Is the $40 for one month? I just want 2 weeks. Is that $20? Do I get dinged for incoming texts? Can I send and receive emails without WiFi? How much do I get charged for calls? Do I need another add on for texting? If so, how much? What else do I need to know so I don't get any nasty surprises?