ForkTailedDrKiller has it about right, I rang the day before to ask about access and was told that all I needed to do was call up and someone would come and let me in.. I called and got a voicemail about 3 times then after 30 mins got hold of someone who then proceeded to take another 20 minutes to show up.
The bowser is an Aerorefuellers? one, and unless you have an Aerorefuellers carnet it is very hard to get avgas after hours.
Plenty of parking however, and awesome scenery from the air!