Nah, no problems with the road if it's not raining, if it's raining it's likely to be muddy in spots but passable. Easy drive, you just go north on I think it's FM 1576 to Williams Rd, go east on Williams maybe 3 miles, maybe a little more and you dead end into a metal gate with the lock, unlock it, then relock it behind you and drive maybe another mile and you get to a walk thru gate. Your there, it's a couple miles to the western edge of the dunes and the area of the old Butterfield stage trail but it's a cool area.
After you pass the walk gate you can see the trail.

And you can see the dunes a mile or so in. When you get to the dunes and find a high spot it's easier to navigate. They arent to deep east to west but going north and south they cover a lot of ground.

It takes a while to get there but to me it's worth the drive.
I think the cafe is called Spanish Angels. They dont have a real good mastery of English as a language but the food is good, we arent talking haute cusine, but it is stick to your ribs Mexican.
If for some reason you decide to go back via the old El Paso (Dell City) road through Dog Canyon it's a little rough and the GPS will lie to you big time. About like the Glen Springs road. Not bad but washboard. I was wanting to go to Sitting Bull falls on the way back out of my trip but ran out of time.