In training they will tell you about how much money you can make from flyers and OT and will talk about how some Letter Carriers make $80,000 to over $100,000 and that there's a lot of room to grow so you're thinking "Oh hell yeah! MONEY!" And even though your on route training may seem difficult you think, I can do this. However, that's only because you train with a person who KNOWS everything about his route including all the time saving shortcuts and they'll most likely be walking at a speed that I imagine people on speed would walk.
When you get called you'll get to the depot then wait for the supervisor to set you up with everything you need which takes time. Then if you're splitting a route with another person(s) you'll have to wait for others to finish using the case (if you don't get to it first) before you can get to your letter mail. Then you'll have to sort through and scan the packages and packets to make sure you have what's for your split, then load the vehicle do the pre-trip inspection and then you'll most likely want to use the washroom before you leave since you won't get to use it again, and guess what? You haven't even started delivering the mail and packages! Now you have to hustle to deliver everything to an area you're unfamiliar with, trying not to slip, trip, or get bitten by some animal (yes dogs hate you and there's always scraggly cats lurking around). Now if you have to claim overtime your supervisor may go apeshit. And while you're delivering you may also be picking up packages and mail to bring back to the depot at the end of the day so don't get them mixed up with your deliveries. At the end of the day bring all your pickups back to the depot and sort them out into their areas and its finally done.
Is it really worth it? Depends on you. I personally think their metrics system to measure the routes is flawed since it seems to only account for you walking up to the point of call and doesn't account for the time needed for customer service, being aware of your surroundings so that you can work safe, environmental factors such as inclement weather, and changes in mail flows for example flyer days or high number of packages. I'm surprised at all the reviews praising the pay and benefits since all I heard in the depots was the people that were there for years complaining about their knee pain, getting caught for taking shortcuts, and for not getting a pay raise. My advice, don't quit your job because you got a job at CP. If you're able to keep your job and do the training great, but make your other job a priority. If you're unemployed and CP hires you, take the training and keep looking for another job because that's exactly how you'll feel when your bladder is full, you haven't eaten, you're nowhere close to done, the dog's barking at you, and you just realized you delivered all the mail to the wrong street :)