You say in one part that you must cancel by midnight the day before, and in the second part that you cancel on the actual day.
No, if you pre-book
the days then you need to cancel before midnight to avoid losing a day (that is not flown following your booking).
I didn’t say you cancel on the actual day; I said you can book on the actual day and that’s what I normally do.
As for the number of days you get, it depends on what cover you select. You can select the ‘ground cover’ one, which covers you for all the normal ground stuff and you then pay for each time you fly. You can get the ‘on demandI’ cover, where you get ground cover and 7 days of flying included and then you top up as required. For each additional day I would pay about £14 but it’s cheaper if you buy them in a block. Finally you can get ‘normal’ insurance that covers you all the time. The good thing about the ‘on demand’ is that if you fly a lot and end up having to buy loads more days then the total cost will never exceed the premium for the ‘normal’ cover for the year; so you’ve got nothing to lose.
The’ normal’ cover was far more competitive than the usual insurance suspects as well