ONE NAME: Dymo Label Writer
This little gem can shoot off gorgeous scripted labels (with graphics if you prefer).The script looks just like it's handwritten. Beautiful, and fast.
I also have hideous handwriting (I'm talking doctor's script) and so does my husband. We could only find ONE local 'calligrapher', and she wasn't available by our wedding date...and she wanted over $1000 (!) to do all of our invites. We're not cheap, but my now husband almost fell off his chair. No way, we decided. So we used to labels. At first I was paranoid, as I was going against 'etiquette'. But in the end, our invites looked clean, neat, and fabulous! No one complained.
We had no one else to help us, as I was in one city, he was in another, and my maids were in another. I wasn't going to ask my friends to leave work for a week to fly down and address my invites.
Traditional etiquette says that everything must be handwritten. But that was also from back in the day when women went to school specifically to learn how to 'write properly' and didn't usually work outside of the home. Times have changed. If you use a label writer or software, this is acceptable to most.
If you know that some of your guests (typically older) may be offended, simply hand address those. Even someone with hideous writing like me can usually address 1 or 2 things, although it may take 2 hours of careful writing and 3 envelopes. ;)
So I say go for it! The only thing you need to do for sure is to hand write your thank you cards! THAT would be bad if you did not!
It took me AGES and I often wasted 3 cards on each person since my writing is sooo bad! But I did it! I just printed, no handwriting. Otherwise they wouldn't be able to read it. ;)
Good luck!