I think it's beautiful - you've done a lovely job
It's not going to be the fastest site to download on 56kbps (29 seconds according to http://www.websiteoptimization.com/services/analyze/wso.php?url=http://www.stawellaviation.com.au/index.html but who cares.
The only things that I could point out would be that without images there's no way to navigate - you might want to include a text only menu down the bottom somewhere?
I think the contrast between the text and background could be upped slightly just to increase readability/legibility on some of the pages.
Only other thing is a bit odd and may well just be me so feel free to ignore-
On the home page and the contact page you've got 3 "pages" overlapping slightly (if you see what I mean) but when you get to the tour detail page you've got a further page there on top of all of them - it sort of threw me a bit...
Really lovely... *sigh*
First thing I thought odd was the image on the right. It would be fantastic if it was on top, stretched clear across the screen.