We will be taking our grand daughter on a cruise for her 1 year birthday in October. the cruise is going to the Bahamas so i believe a passport is required. I don't want to wait and forget to get the passport so we'll go ahead and get in now. Her picture at 6 months will probably be different than what she looks like at one year. Also, since passports are good for a long period of time, would her picture need to be "updated"?