I really want to do it but the man at the post office is kind of a grump and I'm scared to ask him lol. Has anyone done this and did the post office worker not mind, or did they hate you for it? Any advice or experience doing so? We only have about 30 invitations to be sent so it wouldn't take terribly long, not any longer than sending a package would.
Note: I do know that hand cancelling is not necessary. I still want to do it.