I HAVE a printed copy that I keep with me. My point is that I have not NEEDED it, nor BEEN ASKED for it. I AM “playing by the rules”, and I AM relevantly answering the OP’s question.
I have never shown a printed copy. The first time I entered with the DTV, I told the Passport Control officer I had the DTV, he entered it in the computer, stamped it in, and was finished. The next time I entered they asked for my address. Have never shown anything other than my passport.
I just brought in two cats to Chiang Mai January 29. Will bring two more in a month. The biggest expense is the airlines. Pet transport services were going to be double the cost. Just be sure you have ALL required paperwork.