| Term | Definition / Meaning / Stand for |
| GAE |
General Accommodation Estimate |
| GAD |
General Arrival Documentation |
| GAI |
General Arrival Instructions |
| GAT |
General Arrival Time |
| GAC |
General Assistance Center |
| GCD |
General Check-in Date |
| GCS |
General Check-out Status |
| GDA |
General Departure Agreement |
| GDR |
General Departure Request |
| GDB |
General Deposit Booking |
| GHG |
General Hotel Guide |
| GHT |
General Hotel Terms |
| GIT |
General Inventory Tracking |
| GLA |
General Lodging Agreement |
| GMA |
General Membership Agreement |
| GOL |
General Online Lodging |
| GSS |
General Sales Strategy |
| GTS |
General Term Sheet |
| GWS |
General Web Service |
| GAC |
Group Accommodation Confirmation |
| GBT |
Group Booking Type |
| GCI |
Group Check-in Instructions |
| GCT |
Group Conference Ticket |
| GDC |
Group Discount Code |
| GGT |
Group Guest Tracking |
| GHS |
Group Hotel Selection |
| GIA |
Group Invoice Adjustment |
| GMS |
Group Management System |
| GNE |
Group Negotiated Rate |
| GNB |
Group Night Booking |
| GNS |
Group Night Status |
| GNS |
Group Night Stay |
| GOS |
Group Occupancy Status |
| GOL |
Group On-line Reservation |
| GPC |
Group Payment Confirmation |
| GPR |
Group Payment Receipt |
| GPC |
Group Pricing Contract |
| GPR |
Group Pricing Rate |
| GRS |
Group Reservation System |
| GSP |
Group Special Package |
| GTP |
Group Travel Package |
| GTR |
Group Travel Request |
| GTR |
Group Travel Reservation |
| GTT |
Group Travel Type |
| GTV |
Group Travel Voucher |
| GVP |
Group Vacation Package |
| GAB |
Guest Account Balance |
| GAT |
Guest Arrival Time |
| GBL |
Guest Balance Log |
| GBL |
Guest Billing Ledger |
| GCL |
Guest Cancellation Log |
| GCR |
Guest Cancellation Request |
| GCD |
Guest Check-in Desk |
| GCR |
Guest Complaint Resolution |
| GDF |
Guest Data File |
| GDC |
Guest Departure Confirmation |
| GDN |
Guest Deposit Notification |
| GDB |
Guest Discounted Booking |
| GEV |
Guest Evaluation Form |
| GES |
Guest Event Service |
| GFA |
Guest Floor Access |
| GFA |
Guest Floor Assignment |
| GFL |
Guest Floor Level |
| GGR |
Guest Guarantee Reservation |
| GGA |
Guest Guest Assistance |
| GHA |
Guest History Archive |
| GLA |
Guest Loyalty Account |
| GLC |
Guest Loyalty Card |
| GMA |
Guest Management Agreement |
| GMI |
Guest Membership Information |