Just want to put this up, taken from the FAQ:
So if got the code the same day pre-order started you may not get 5 days, maybe just one. Kinda sucks, however the importent thing is we get to play the game in the end anywaysWhen does Early Game Access begin?
Early Game Access may be up to five days prior to the official release of Star Wars: The Old Republic. The length of your Early Game Access period will vary depending on the date and order in which you redeemed your Pre-Order code, as well as where you live and your Internet service.