Hand Canceling that is... Having your invitations Hand Canceled just looks so much prettier!
Here is an example.
Machine Canceling:
Hand Canceled:
It's just a much more clean look. Although... not all post offices do it. You must inquire in advance, find out if you need to do the stamping or if they do.. and if you need to show up right as the post office opens- there are more rules.
But I totally think its worth it.