Seasons — a date range that prices differently
Setting a peak or a lean period once instead of typing a hundred nights.
A season is a date range that prices differently from the rest of the year: Diwali, a wedding week, the monsoon lull.

Do this
- Name it — Diwali, wedding season.
- From date.
- To date.
- Change by — a percentage or a flat amount.
- The number — 25 for a quarter more, -15 for a monsoon discount.
- Priority — decides overlaps. The higher number wins: a wedding week inside a peak season is a higher priority than the peak.
- Add this season. The days of the week between 5 and 6 narrow it to weekends only, if that is what it is.
What actually happens
The season is written into the daily rates when you save it. It is not worked out fresh each time somebody asks for a price — which means the rate a guest is quoted is a row you can open and look at, on the rates screen, night by night.
So: change a season, and the nights change. Delete one, and those nights go back to the base rate. Nothing is left over.
Where it does not reach
A booking already made keeps the price it was made at. A season is what the hotel sells at from now on, not a re-pricing of what is already sold.