"OV, AI room - AO -- OLCI available."
Interpretation: "Ocean View, All-Inclusive room at an Adults-Only resort -- Online check-in available."
Here's a list of commonly used travel abbreviations and acronyms:
AI - All-Inclusive
APEX - Advance Purchase Excursion Fare (usually the cheapest tickets a passenger can get; usually restricted in number)
BAL - Balcony
EP - European Plan (room only -- no meals)
FP - Fireplace
IFE - In-flight entertainment
OV - Ocean View
PAX - Passenger
PNR - Passenger Name Record (6-digit alpha-numeric reservation code - also known as Record Locator)
ROH - Run of the House (if a hotel room is advertised this way, it means the hotel can assign any type of room that is available at the time of check-in -- this could be good or bad)
RT - Round Trip
RTW - Around the World (I know, this one doesn't make sense)
Here are some other terms and phrases that are used frequently on travel booking sites:
Standard Rate - (hotel) also referred to as the "Rack Rate" (this is the rate before any discounts or promotional pricing has been applied).
Flexible Rate - (hotel) with this rate, you have the option to cancel or change your travel date without cancellation penalties.
All-Inclusive - (hotels) accommodations, meals, snacks, beverages (including wine, beer and spirits), and gratuities are included in the package price.
All-Inclusive - (cruises) accommodations, meals, snacks and beverages are included, with the exception of soda, beer, wine and spirits. Unlike hotel all-inclusives, cruise ship gratuities are NOT included in the package price, but can be paid in advance before you travel.
Advance Purchase Rate and Saver Rate - (hotel) with these rates, you generally get the best prices, but you cannot get a refund if you cancel.
Fare Buckets - Airline booking classes.
Black-out period - specific days/dates or periods of time when a special rate is not available due to high demand.
Bumped - (air) the number of seats on the flight have been oversold.
Layover - (air) the period of time between connecting flights.
Direct flight - (air) a flight itinerary in which a plane makes a stop in one destination to pick up or drop off passengers, but passengers do not change planes.
Transfers - refers to round trip ground transportation to and from the airport to your hotel or cruise ship port.
Beachfront - hotel sits along a stretch of beach.
Oceanfront - room directly faces the ocean (as opposed to Ocean View, in which case the view of the ocean may be partially restricted).