Hey Pete
Welcome aboard. I wouldn't bother with the Maitland show. Go to the one in Sydney at Rosehill. There are more vendors there and it is much more user friendly esp if it rains. Maitland showground can get very muddy as we found out when we went there one year. If you are looking to buy, don't rush it. Take your time to have a good look at the show and then see if you can hire a camper that you like for a trip. This will give you a hands on feel for setting that one up and how useful it may be for you. Also ask a seller to show you how to do a basic set up. Some will, others wont (either because their set up is too slow and difficult or they couldn't be bothered or both). Remember they get a fair few requests to do this at the shows. My advise, take it for what it is worth, is don't buy Chinese. Yes it is cheaper but not built nearly as well and the canvas..... lets just say buy quality aussie canvas. There are quite a few good aussie campers out there. Work out a budget and then post a thread and I am sure you will get many replies on brands. Remember people here own, use and modify campers and will have an honest appraisal of them. you can then work out which one suits your family the best and zero in on them at the shows. Just my 2 bobs worth