That's right, Chesty. This is the big misconception by alot of pilots. The minimum/normal/maximum nightstop preference is just that, it's a preference. "I would like minimum nightstops if you can, please", but with BHX being a base that supports alot of nightstopping it is virtually impossible to get your preference. It should improve once the Brussels contract is fully crewed locally.
Do you get paid extra for night stops? Otherwise why does anyone select maximum? Unless they really don't like their wife...