The barge takes two hours to get to Moreton so price is not so bad. Probably makes it cheaper than any other beach national park if you live in Brisbane. Fuel at Moreton at the Bulwer Garage, where the combie trader pulls in or at The Gutter Bar in Kooringal and sells for around $1.20/litre. There is a great bait/tackle shop with almost mainland prices at Bulwer if fishing is your thing. Try to come out of School holidays as the traffic is crazy (for a Moreton Island Resident). Come in school holidays if you must, it's better than missing out. Not a lot of tracks here, mainly beach driving. The inland tracks get seriously soft when they have been dry and had a lot of traffic. For those not experienced in soft sand driving...get some tips, I've seen plenty of "experts" with sand egg on their faces! Moreton has plenty of campsites, spectacular beaches, crystal clear water, great swimming and snorkelling not too mention the whales from june to october. I could go on and on (already have), will happily give more info for anyone who's interested.
Tangalooma Resort has a website that includes virtual tours of a few spots on the island.
www.tangalooma.com