Your situation is the exact opposite of what ours was. We had to book ahead to align with our daughters work and university commitments and our granddaughter school and after school care. But the schedule never ran smoothly so we then had to make short notice changes and cut plans short. It was absolute heaven when I was working as I had control of our lives😀Yes thats what we have done, before retirment we went to France every 12 weeks for a month, all planned in winter but summer just went, . Now it is fit in the caravanning between hospital, visits etc. Locally ( 50 miles) we have , non ehu pitches available towards the end of week. We dont book 2 month ahead, to much unpredictability, for us. Maybe we should but that is just not us..
The dog loves getting out in the snow early mornings from the caravan, in the winter.