This is my main concern, when New Vegas was released, my local gamestop had the usual midnight sale as they do with major titles, and which they're doing tonight with Skyrim. Problem is this:
I get the game home, around 12:45, installed it, no problem, and Steam informs me that I am not authorized to play a game that hasn't been released yet. It took until 3am until Steam would allow me to play New Vegas, since that was midnight on the west coast, and I'm on the east coast. Am I going to have this same issue tonight? If so, Steam needs to look at time zones and understand that midnight isn't the same time everywhere in the country. Frustrated was not the word, and I'm hoping against hope I don't have to repeat that aggravation tonight.