Everything in DTD closes at different times, but I think 11:00 pm is the earliest stuff starts closing. Then there can be a 30 min difference on Sun-Thurs. and Fri-Sat, where as, if something closes at 11 pm Sun-Thurs, it could close at 11:30 pm on Fri.-Sat.
Then some stores stay open as late as 2 am, when all the clubs and DTD pretty much shut down.
Hope that didn't leave you
There's not really a definitive answer to that. <a href="http://disneyworld.disney.go.com/waltdisneyworld/parksandmore/shopping/othershoppingindex?id=DDNonFeaturedShoppingNFS" target="_blank">This area</a> of Disney's site will back my ramblings up, lol.
Well..I have hung out in the Virgin mega store until about 1am before...so i know thats open late..and Im pretty sure Mc.Donalds is also open to the wee hours of the morning...