The job looks to have changed since I did it in the 80s. Then it was a 5.30am start sorting the mail firstly into areas then at your desk into your own route. Out to start delivering at 7am. First delivery finished by 9.30, back to the office for a break before sorting the second post and out to do the second delivery around 11. Finished by 1, in the pub by 2, bed by 8.
It was a good job initially but it started to slide as new managers instituted changes to working patterns. As meter mail increased (junk mail), the bags got heavier and heavier, necessitating more second bags being left around the route. This led to strikes as we weren't getting paid any extra for this work. Strike was settled when management cut a deal with the CWU to increase bonuses for staff at the big sorting centres in London and Birmingham (?) whilst every other postie got nothing. That led to a lot of resentment.
There was a great cameraderie amongst the posties, lot of ex-servicemen. A surprising amount of writers and creative sorts as well. It's a good job for not actually having to think a lot and (back then) it was seen as a job for life. I took over from Sandy on the Crossroads route, who had been my postman for as long as I could remember so there was a continuity which the public liked. But management started to insist we all changed routes regularly to make it easier to cover holidays and do away with the floating cover role - usually the job occupied by the union delegate, who tended to be a long serving postie.
Nowadays there looks to be a lot more agency staff and posties get shuffled around the walks more. A side effect of that is they'll get less tips at Christmas
However as rightly pointed out earlier, a new start won't have all this on his/her mind and can treat it as a blank canvas. I never really minded the bad weather - it's great being the one to put the first footsteps in snow - and the walking keeps you warm.