CellAtSea? We're going on a cruise from Miami, through the Bahamas and back to Miami. The cruise line offers CellAtSea service on-board, but I'm not certain if I need just my US package for this, or if I require the International package. It says if you are dialing the US or Canada, you dial as normal (no country code), so I'm thinking US only is required (provided I don't get service while in port in the Bahamas). Anybody know? Any other charges I might incur? Thanks in advance.