Fill Curve
Definition
A visualization of how a future period fills up over time, plotted as cumulative bookings against days-until-arrival. Each future period has its own fill curve.
What it tells you
Shows whether a period is tracking, ahead, or behind expectations. Comparing the curve’s shape to last year’s same-period reveals whether demand is shifting in time or in volume.
How to track it
Available in advanced BI tools and most RMS systems. Manual computation requires daily snapshots of OTB for the target period.
Where it fits
The more sophisticated cousin of pace tracking. Especially useful for resort hotels where booking lead times are 6–12 months.