When buying a multi-device package, all devices will use the same username and password.  Make sure that the person who purchases the package under their name in the Cruise Planner is also the same person that initially connects on board the ship.  After connecting to the "Ship Guest" network, they'll need to create an account using the "First time here?" section:   They will need to enter their first name (as it's listed on the cruise documents, so "William" instead of