I'm a member at Stapleford Abbotts GC, which is a part of Crown Golf.
I got a three year deal for a seven day membership.
On the other crown courses I can play for free midweek, which is handy for me as I work nights so can play on a Monday morning. This is only allowed eight times a year on each course. They did this to stop people paying for a membership at one course and then playing most of their golf on another more expensive course!
As I understand it if I play on a weekend after dinner I will get a greatly reduced green fee. And if I play on a weekend morning I pay the same rate as a member's guest, so still saving me a bit of money.
I always ring the course I want to play before going just to find out what the costs are.
Russ