Well tipping threads tend to be a little bit of a mine field. Well I guess our whole tipping culture is.

The amount is totally up to you.

I would say especially since you are going to end to end on the routes you will see your sleeper attendant at the end of the journey and can hand them a cash tip discreetly via a hand shake at both Chicago and Emeryville.

If you take your meals in the dinning car even though they are included you'll have a server there who will appricate a small tip after each meal.