You don't need to use Bootcamp, if Windows is the sole OS you want to install. Bootcamp or rEFIt are only needed, if you want to use run multiple OSs.
Just like Altemose said, only the Bootcamp drivers are needed. It might be a good idea to download them in advance and putting them on a USB stick, as depending on the MacBook Pro model, Windows might not have proper network drivers for it built in. You might not be able to download anything (including the Bootcamp drivers) before installing the Bootcamp drivers..