Played just the Yuffie DLC, took me about 6 hours to finish in normal mode. Its pretty lame, she is a dumb character and the entire DLC feels like a weird demo or something. Not worth playing at all really, the only thing I'd say is if you enjoyed the FF7 remaster I'd watch youtube vids of the final cutscenes and stuff, there is some cool (minor) stuff that seems like good bread crumbs for Final Fantasy 7 Remake Part 2. Mostly watching it made me realize how much more I like playing with Cloud, Tifa, and Aerith.
Visuals are fantastic though, running at 60 fps with great textures I'd almost be tempted to replay the base game but I'll just wait until the next part. I really do love the world of the game.