Must be able to use a Check-in and Check-out dates and calculate the amount of nights
Tariffs for special days must be calculated seperately from normal rates. For example: if long weekend is from 10/03/22 to 14/03/2022 and the guest book from 8/03/22 to 16/03/2022, the rates must be calculated for 4 nights special rate and 4 nights normal rate
Can use a Google Spreadsheet to indicate special days and special rates
