The CEO of a client is an avid Apple iPad user. I don't know whether his model has the AT&T cellular option or WiFi only. Assuming he has the cellular option, how can he get his iPad on the Internet in Europe and Asia? Does he have to notify AT&T which countries he is traveling to? Anybody done this and what does the International data service cost? What about WiFI, is it as common in Europe and Asia as it is in the U.S. in major cities?