Tax instituted by cities and other local municipalities on hotel stays within their administrative boundaries. Usually calculated as a percentage of the cost of lodging (for example 8% or 10.5 %). Occupancy tax can also be a fixed price calculated per room or per person.

Refers to time periods when travel is slower due to specific time of year, weather, date and similar and when fares tend to be less costly

Process undertaken up to twenty four hours prior to arriving at airport. Usually involves logging into the airline`s web site, entering confirmation of purchased fare (six digit reservation code), providing information on number of passengers, how many bags will be checked, choosing a seat (if avialable) and in turn receiving a boarding pass with seat assignment, gate number, boarding priority code and other flight information. Traveler must still physically check in their luggage at the airport but this is expedited for travelers who have previously checked in online.

Practice common in the airline industry where more seats are sold on a flight than are available. Usually done to account for estimated cancellations. Passengers that want to voluntarily postpone their flight are offered vouchers for future flights.