I've flown a Duchess into DFW to pick up a friend. DAL is definitely easier, but if you have to do DFW - it's not bad at all. I used the "DFW Airport Board General Aviation Facility". I was there for about 2 hours, and didn't have to pay any landing fee. 100LL isn't cheap there, so tanker fuel if you can.
The FBO isn't anything special, but it's functional and has all the typical items you'd expect at any FBO. Weather, restrooms, transportation, etc... The line people seemed nice.
I flew there IFR, and it was a piece of cake. The controllers didn't seem at all bothered about my presence. Lots of taxiing, but as Mach92 mentioned - you gotta take care not to get close to any jet in front of you - especially if it's stopped and about to move.
Just plan accordingly, and you'll be fine.