If I were to download the beta on my laptop right now, could I redownload the beta friday from my desktop computer without any trouble?
Of course, you can download the client any time you want. It's your account thats important, not the client. With that said i think you have to be logged into an account to download the patches, if your also playing in the beta on friday, you may not be able to download it at the same time.
Okay thanks just entered it, and what do you mean by that last part?