When are you getting married? I got married three years today!!! I sent out our thank you cards with our Christmas cards in November to kill two birds with one stone and save on postage.
It took me two years to change my name on my drivers licence, as you have to go into the transport office and I hate having to line up. Some things are really easy and just needs a phone call, other things you need to show proof. For those things, you'll need to get the official marriage certificate, not just the one they give you on the day. This one costs about $25 from memory. You apparently get a month or so to change your passport before they charge you. I wish I knew this before I got my act together as mine is still in my maiden name.
Congratulations and I hope your wedding is all your dreamed for and more