Atlanta - Good, easy to get to and late night..
Toronto 'hounds coming to Atlanta to work at that very large SF convention in town over Labor Day. Generally, we're done work around 10 pm, and are craving something other than overpriced room service. Staying at the Marriott Atlanta Marquis, at 265 Peachtree Center Avenue.
Any and all suggestions welcome, and appreciated.
With all due respect to poisontea, I would not call Waffle House's food "very good" nor would I point an out-of-town visitor there. Personally, I think it sucks, others may consider it acceptable, but it's just a chain version of a greasy spoon.
Six Feet Under has two locations (Grant Park & Westside) that are within 3.5 miles of your hotel. It's a seafood shack/bar serving oysters on the half shell and fried fish platters (that's usually what I get), etc. and they are open till 2 AM on Fri./Sat. Kitchen may close a little earlier, so call first if you are planning on dining after midnight.
Two Urban Licks which is a 5 min. cab ride from your hotel serves a "late supper" menu. Place can be a scene, but the food is pretty good.
Further up in Buckhead, there's Au Pied de Cochon which is a french brasserie in the Intercontinental Hotel and is open 24 hrs. I've never eaten here, but you can get typical fare such as cold seafood platters, steak frites, etc. Some opinions I have read have preferred this place over the below mentioned FAB, but this is a good 20+ min. cab ride from downtown.
On the not so easy to get to from your hotel list, is Buford Hwy, which has a ton of ethnic restaurants, some of which are open very late or 24 hrs., such as El Rey Del Taco for tacos (24hr.) or Hae Woon Dae for Korean Bbq (open till 4 AM I believe)
The 1st three resto's I have listed all have websites if you need more info.
Woodfire Grill. $12-15 cab fare. first choice, bar none, serves untill 11 on fri/sat
Blue Pointe Buckhead, a $15 cab fare from downtown, serves until eleven. ok chow quality, but very high priced food. IMHO, stick with the aged prime steak, skip the frequent flyer mile laden expense account seafood, and whatever you do make sure its the company--not you--that pays.
French American Brasserie. until 11 fri/sat. Its a big, seven day a week operation. chow quality, well, 'nuff said. but its right downtown.
If I were drop dead tired, I'd go to FAB. If I had an ounce of energy, I'd go to Woodfire. If I wanted to cruise for company, I'd haul up to Blue Pointe to fuel up and partake of the active scene at the bar. Good luck.
OK, Dragon*Con over Labor Day Weekend, wont be eating until 10:30 or 11:00 pm, staying downtown which turns into a ghost town at sunset. While the other suggestions are good, they are on the higher end of the culinary scale. If there is a vegan among you, head to R. Thomas up Peachtree St. It's about a fifteen minute cab ride, but they are open 24/7. Carnivores might want to check out the Vortex on Peachtree, a bar that serves great burgers. It's about 7 minutes up the road from your hotel. They serve til 2 AM most nights, midnight on Sunday. A little farther up Peachtree and one block over on Crescent Ave is Front PageNews, open late serving Cajun Style cuisine with some bar food thrown in. Kind of across from the Vortex is Loca Luna. The best entrance is a block over on Juniper (one way street south), it's kinda of a nightclub/restaurant serving latin food, mojitos, and margheritas. Down Ponce de Leon is Fellini's Pizza (serving til 2 AM except sunday til midnight) and the Majestic Diner (where Yuppies dine next to strung out hookers after clubbing til 3 AM). This should see you through the weekend. If you are looking for a particular cuisine, let us know.
Folks have covered things pretty well. One other idea- Hong Kong Harbour (Chinese) on Cheshire Bridge is open until 3AM Fri and Sat. Late night pan fried pot stickers can be a beautiful thing.
Krog Bar might also be open- I couldn't tell from their site, and I'm ashamed to say I haven't been yet.
Just remember- folks may look at you funny if you're still in Klingon guise, and your Queen Amidala getup may not fit through the door at most places. ;-)
Since you are coming to DragonCon, you likely have a high tolerance for the psychotronic. Downtown Atlanta, unfortunately, is a bit of a culinary graveyard (and there isn't a Waffle House downtown that I am aware of.)
If you want to stay downtown, rather than grab a cab, you might to finsh your evening at Trader Vic's (which serves food to 10:30, fruity drinks to later.) The place reeks of 50s polynesian kitsch, and, being in the Hilton, is within walking distance of the Marriott.
Also, if you want to wear a costume, you might want to finish your night in Little Five Points. The Euclid Ave Yacht Club has good bbq to go with the bikers, and the Vortex has outstanding burgers to go with the bbq. (Zestos is also pretty good fast food.) Advantage of L5P to some of the other suggestions is that there are several places open late within walking distance of each other.