Matching Pairs Hospitality AcronymsOnline version These are some of the acronyms that will be used often in the hospitality & service industries. by Shannon Thomas 1 BEO 2 ADR 3 AV 4 FOM 5 FOH 6 MTD 7 F&B 8 LOS 9 CRS 10 BOH 11 ETA 12 ETD 13 ALOS 14 C/O 15 GRA FRONT OF HOUSE FRONT OFFICE MANAGER BACK OF HOUSE ESTIMATED TIME OF DEPARTURE AUDIO VISUAL GUEST ROOM ATTENDANT CENTRAL RESERVATION SYSTEM BANQUET EVENT ORDER FOOD AND BEVERAGE MONTH TO DATE AVERAGE DAILY RATE ESTIMATED TIME OF ARRIVAL CHECK OUT LENGTH OF STAY AVERAGE LENGTH OF STAY