just be forewarned that you might be without any broadband access for more than 24 hours. (or all weekend + 24 hours if you're unfortunate enough to time it like that). That wasn't something that I expected and was a problem since I rely on it for work.
It took (far too) many phone calls, Telecom blaming Chorus + vice versa, before i finally got bumped up to level 2 support, and where it was quickly resolved within a couple minutes.
Also, unlikely that it would matter for most, but something I didn't expect was that my IP address changed.