Yes. I have only used the CD/DVD drive on my current PC for installation of windows.
Also, a new optical drive is probably only around 10 bucks and easy to install. I am just saying.
Yeah, there is that. It's basically disconnect the power cables, unscrew it, push it out, put the new one in, rescrew? Even if someone doesnt have much experience that wouldnt be a hard thing to do.
Or as others have said you could download the client. Right now my .dat file for the game shows it's about 15.2gb. So depending on your connection it could take a bit. Also dont forget if you have any limits on your download usage per day or month, etc.