What is an Add-on? Optional tour features that are not included in the base tour price, such as meals, upgrades,…

What is a CRS? Acronym for Computerized Reservation System.  A computer based electronic data system that allows a supplier (traditionally…

What is an Overbooking? Reservation of more seats by a tour operator than are actually available, sometimes done deliberately to…

What is a Rule? One of a set of principles or regulations that controls the way pricing or inventory is…

What is a Tour Option? A version of the tour or activity that a customer can actually book.  In most…