The column n-days defines how many nights are included in the basic rate.
Usually, the rate would be per night, i.e. the field n-days would be set to 1. For packages including several nights’ accommodation, the number would be adjusted accordingly, e.g. 5 for a rate of 5 nights.
è EXAMPLE: The flat rate of € 500.00 includes five nights’ accommodation.
Exactly how these nights are charged depends on the column package.