I hate fussing around and things, so I'd probably do something small in the town I used to live in at the church I went to when I was a kid. Assuming I married an Australian or someone who was willing to go to Australia. It's not an old church or anything and it's all very modern looking and has a lot of air and space and natural light and I wouldn't wear a big white dress with all the sequins/rhinestones/etc. and tulle ever. I'd probably just wear something simple but pretty and have interesting shoes and hair instead. And then we'd all go have lunch or dinner or whatever in my Nanna's backyard because it's pretty and has a nice garden and a water feature and also a massive table that you could definitely fit a good few people around.
I don't actually think about the wedding thing a lot and pretty much came up with all of that just then, but it's probably fairly close to what I'd do. It's based more on my dislike for big poofy dresses and organising parties than anything I've spent an extended period of time considering.