Btw, an alternative to getting around, other than driving:
Yes! Dallas has it's own public transportation system!
Actually, if you are flying in to DFW, you can take the Trinity Rail until it ends, and then take DART rail..which has a stop right outside the Adams Mark. Very very convient.
There's a link to the page. I imagine it has maps and timetables. I fully plan on using DART if I need to get around outside of the con...like I said, there is not really any free parking in Dallas, and I don't intend to have to pay 6 dollars every time someone wants to go get dinner. :O DART goes ALL over Dallas, except up to where I live, apparently. Damn you, DART!
Btw, on parking:
There is parking for the hotel. It costs 12 dollars. The hotel is NOT validating parking AT ALL. You can park in the hotel's parking garage, and play roulette, and hope you get to drive out when there is noone attending the exit station (it seems to work quite well at cons, actually)
Also, there is a paid parking lot right across the street from the convention center, that is, I BELIEVE 6 dollars a day, if I read the sign correctly. Honestly, even if I were staying at another hotel, I'd plan on getting to the con, and settling in for the day. Don't move your car until you are going home. Parking is a major...errr. PROBLEM in downtown Dallas.
Also, if you DO bring a car.
Take your stuff. Lock your car. Hide anything valuable that you leave in the car. Not to scare you driving people, but Dallas has a problem with little punks breaking into people's cars. If it's possible, and you are not staying at the Adam's Mark, I'd even suggest leaving your car at the other hotel, and taking DART if possible.