I can't help much with Australian sources, but I did want to say that feet can be trained to live with between-the-toe thongs. I usually spend my summers in that kind of sandal, but every year I have to rehabituate my feet to them. It's not hard. You just start wearing them around the house (even a pair of cheap rubber flip-flops would do for the breaking in process) until your feet have toughened up a bit. Once I'm used to them again, I find them kinder on my feet, with fewer issues, than almost any other kind of sandal.
Good luck with your hunt.
On a totally different note, I hope that bride is really pretty. She's going to need it to balance you out. ;o)
