One day weekends

I am finding it increasingly frustrated that more and more sites are becoming fully booked on the Saturday night only, so we cannot get a weekend away for Fri & Sat night.

Is this something other people are finding and wonder if the club should have a policy that outside of low season, the minimum weekend break should be 2 nights Friday & Sat or the sites have a max number of pitches for 1 night bookings as more often than not a fully booked Saturday will leave the site half empty on the Friday and Sunday.