You can do services for up to 10 hours (e.G. when your real self is sleeping). Like the quests this services are real time.
While doing services you cannot fight in the arena or do quests, but you can be attacked.
If you abort you get no money - not a single gold coin. But you can start a new service immediatly (even while you are badly wounded).
How much gold do I earn?
gold per hour= 24 + (level*8)
So you start with 32 .