POS
Point Of Sales System

PMS
Property Management System

Property
A hotel, motel, inn, lodge or other accommodation facility.

Peaks and Valleys
The high and low end of the travel season. Travel industry marketers plan programs to build consistent year-round business and event out the "peaks and valleys."

Package
A fixed price sellable travel product that makes it easy for a traveler to buy and enjoy a destination or several destinations. Packages offer a mix of elements like transportation, accommodations, restaurants, entertainment, cultural activities, sightseeing and car rental.