If Rogers has 9+ million subs, and even a small percentage preorder or go for the 4S, then I'm sure you'll be fine as #678.
How did it work by the way? Didn't realize they actually tell you where in the queue you are.
Hey Profets...you actually go online to the Rogers.com site...log into your account and there it offers to reserve your device...once reserved it will tell you what number you are. I was 678 yesterday...hoping to be down a few more today. I likely go wait in line anyhow, just in case my unit doesn't arrive on launch day.