Hey Tim - I know how you feel buddy! My legs were killing me today! Not as fit as I used to be.....thats a bare faced lie, I've never been in shape!
Mate, no worries - even if you decide to come on saturday night, just drop me a pm and you can meet at my house. It is pretty crazy down there, they've got helicopters lying around in the game zones.
Take it easy!
Ains