Hours flown on night freight operations are quite low typically 250-300 a year. DHL have taken low hour pilots in the past, but due to the low hours flown this tends to create a bit of a bottle neck in the system, so anyone joining a night freight operator with low hours will find it will take them years to build the required hours for a command. Therefore alot of night freight companies may require 1000 hours so that your time to gaining a full ATPL hence be able to take a command will be shorter.
Max duty hours and minimal flying probably describes working in most night freight operators. Alot of time downroute in hotels and waiting in crew rooms, however there can be some time for touring the local towns. Maybe the best job if you are single, quite possible the worst job in the world if you have a family.
If you want to fast track your career you are far better going to Ryanair.