I haven't tried The Club at DFW. I was at Plaza Premium on 1/23/24 as I had a 4 hour layover in DFW. I was on AA First Domestic, so no lounge access included in my ticket and I wasn't about to pay the $79 or whatever AA wants now for Admirals club.
As others have said, this lounge is tiny. It was very full when I was there. Drinks were pretty good (cocktails). Food selection limited, but they did have some turkey sandwiches and cookies which definitely held me over. You have to use the restrooms in the airport, but I think there was one fairly close by.
For a "free" lounge, it's not bad.