Search for late availability other than weekends

Morning all,

So Mr T and I were sitting in the garden yesterday evening and decided the call from the 'van was getting louder - it was time to get away for a few days again.  Luckily we can now be flexible where and when we go, what is difficult is finding where there are pitches without having to search individual sites. 

It would be good to have a facility on the late availability to be able to enter a date range to find out which sites have pitches, not just the next 3 week ends.

Is this a Rowena question?

Cheers

(Apologies if this has been raised before)