An Individual profile is the complete history of a guest. It contains all the guest’s contact details together with a record of all the stays and revenue that they have spent with the hotel. It also shows any future and past stays that the guest has had. The reservation detail is a collection of data specific to the reservation. The reservation detail is not specific to a guest – you are able to link the reservation detail to any guest profile. Information that is recorded in the reservation detail includes arrival and departure dates, ETA (Estimated Time of Arrival) and ETD (Estimated Time of Departure), rate, room type, room number etc