If getting a passport is an obstacle to taking a cruise, here are some trips that may not require that document
(LA Times MLB)

Let´s say your family wants to take a cruise, but dear old Dad - or Aunt Meghan or sister Sara - won`t take the time or spend the money to get a passport, which they´ll need on many cruises. That´s because most foreign-flagged cruise ships - and most are registered in other countries - are required...