Not much to report here. We ordered the table name cards from a seller on Etsy. She had a nice design we liked, so we contacted her and asked how it would work. She needed a specially-formatted Excel file of all the names, which we were able to easily provide, having exported it from The Knot.
She sent them, they looked great, we paid her. They were sent to the venue, and they put them out. Simple. Sweet as.
Verdict: You could write them, or print them yourself, but we found it expeditious to outsource this little task. Support your local Etsy seller.