Read this tip to make your life smarter, better, faster and wiser. LifeTips is the place to go when you need to know about Wedding Invitations and other Invitations topics.
You would write your destination wedding invitation in the same format as a "home-town" wedding invitation, including the location.
You should also send a save the date card to your guests WELL in advance with the date, location, and accomodation information. This way your guests will reserve the date for you and they can budget for the flight and accomodation costs.