A days personal choice
It's a personal choice. If i have an A day I can go boating ( within mobile phone coverage until 1400L). Or play golf and not have to worry about getting called to go to work as I don't have to report for 10 hours, or have a BBQ with a few beers, etc. So it's amost like a day off rather than reserve which is a pain in the butt. Personally they work for me. cheers