Illustrative calculation
Assume 40 guest requests per day, two minutes of manual coordination avoided per request, 30 operating days and an hourly value of $12. That is 2,400 minutes, or 40 hours of coordination capacity, notionally valued at $480 for the month. It is not a forecast of payroll savings; the hotel may redirect those hours to guest service rather than reduce staffing.
Revenue is a separate hypothesis
Digital room-service ordering may make some items easier to discover, but demand, room occupancy, pricing and service quality all affect purchase behaviour. Model 2%, 5% and 10% order-revenue changes as scenarios, not guaranteed results. Convert extra sales into contribution using the hotel’s own gross margin assumptions.
Do not double-count
If the same saved coordination time is already included in a labour-capacity estimate, do not add it again as a staff-cost reduction. Likewise, one-time avoided hardware cost belongs in first-year value, not recurring annual savings. Document each assumption and disclose whether it was observed or modelled.