In my opinion, buying internet minutes is probably the most expensive service available on the ship (what other service charges you by the minute?). During our "Rome to Home" Cruise (Carnival Liberty, 16 days) I spent about $200 USD just updating my website (photos) and checking my email. I have to say, we did bring our laptop and it was so nice to be able to have WiFi available in our room. In retrospect, I guess it was worth it! I really enjoyed being about to send pics we took that day and send them to friends and family all across the US (while out at sea, whoa, cool).