I visit White Waltham by air fairly frequently. I have NEVER been treated with anything less than courtesy. The landing fee is pretty reasonable by modern standards.
The clubhouse (ex-ATA HQ) is exactly what a flying club bar and restaurant should be. If I lived in the vicinity, I would love to become a member because the WLAC is a dying breed.
They are a proper club and long may it last. Don't even consider letting the public in.
As I have already suggested, if the gentleman that started this thread had explained that he was unable to fly in that day because of the weather and had offered to pay the landing fee anyway, he would probably have been allowed in free of charge.