Each person that makes a reservation indicating you as their 'Trip Partner', including yourself, gives you one credit.  Once you've reached 10 people (credits), you reach the first tier of discount, 30%.  Additional sign-ons (credits) increase your discount, up to you traveling for free with 30 sign-ons.

Customers may sign-on for any trip, not just the one you are promoting.  Credits may be used for a trip of equal or lesser value.  For instance, if five people sign-on for London, Paris and Rome using your name and another five sign on for New York and Canada Bethel Classic with Manhattan using your name, you now have 10 credits (a 30% discount), which may be applied towards the trip of lesser value (New York and Canada Bethel Classic) or another trip of that value or less.

In addition, Trip Partner credits cannot be combined with that of another person, whether of the same family or a friend.  You may, however, apply your earned discount to an individual of your choice.  Once you've earned a minimum of 10 credits, they will expire after 18 months.  In other words, you must use your credits within 18 months of earning them, or at least have your trip planned by the end of the 18 months.  You may continue to earn credits during those 18 months and have any additional credits earned applied to the trip you've already selected, according to the above terms and conditions.