I have worked with these suppliers and would happily recommend them for your wedding.
ACRYLIC & WOODEN CAKE TOPPERS
CAKE DECORATING SUPPLIES
World of Cake at Glasshouse Mountains 0414 530 978
Buttercups at Cooroy 0452 506 606
The Bake Shack at Caboulture South 5495 1333
For small amounts of fondant (1kg packs) Woolworths now have a couple to choose from, Big W also has a cake decorating section with basic supplies, colours, fondant etc.