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 ADR 2 ALOS 3 FOM 4 MTD 5 ETD 6 FOH 7 CRS 8 F&B 9 LOS 10 GRA 11 ETA 12 BEO 13 C/O 14 BOH 15 AV MONTH TO DATE CHECK OUT AVERAGE LENGTH OF STAY AVERAGE DAILY RATE ESTIMATED TIME OF DEPARTURE LENGTH OF STAY CENTRAL RESERVATION SYSTEM GUEST ROOM ATTENDANT BANQUET EVENT ORDER FRONT OF HOUSE AUDIO VISUAL BACK OF HOUSE FOOD AND BEVERAGE FRONT OFFICE MANAGER ESTIMATED TIME OF ARRIVAL