Overall fantastic place. The decor is very cool and the food is good. Even if you are not a fan of hot dogs, they do have burgers (including a black bean burger!) and chicken options. I had the original retro dog- diced onions, chili, and cheese. It was quite yummy. There was a hint of cinnamon in the chili that I could have done without but it was still delicious! My combo also came with a side of home-style fries which were surprisingly crunchy as well as tasty.
Retro dog also offers a variety of retro sodas- cream soda, black cherry, root beer and so on. The root beer is actually their own recipe and made locally. It was a sweeter take on root beer than most places, so if you like sweet pop, you will definitely be a fan :) plus it comes in a frosted mug, just like all root beer should!
Customer service was fine, seems they have worked out any kinks they may have had since opening earlier this summer. I know I will be going back!