| Rank | Abbreviation | Meaning |
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| ***** | RATE FENCE. | In the hotel industry, any number of characteristics that are used to determine the rate for a room. For example, a physical rate fence would involve the location of a room; a product-line rate fence
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| **** | RATE DESK. | The office of an airline that calculates fares for travel agents and passengers.
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| **** | RATE HIKE. | An increase in fares or other costs.
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| **** | RATE ACCESS CODE. | Any GDS or other alphanumerical code that displays hotel or other rates that are available, typically by negotiation, only to certain companies or categories of traveler.
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| **** | RATE OF THE DAY. | A hotel pricing system in which the rack rate varies from day to day.
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| *** | RATE AND SERVICE STRUCTURE. | The prices a carrier charges and the services and amenities it provides, considered as a whole system.
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| *** | RATE PARITY. | A situation in which a travel supplier, such as a hotel, maintains the same price across all its various distribution channels.
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| * | ADIABATIC RATE . | Rule of thumb which holds that temperature decreases as altitude increases (3.5¡F per 1,000 ft.).
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