First train trip.. Wife and I traveling in a couple weeks and will have 7 nights with bedrooms with all segments together. For two people together in a room is $20 an appropriate tip per day? And do you give it to your attendant when they initially bring you to your room or later?
Initially bring you to your room? What's that? Oh yeah! That's something redcaps do where they exist. As to the SCA, most don't even help us seniors in our 70s lift our bags up the stairs to the train level much less doing the same inside the train on a superliner. They do tell us which direction to turn when they check our names off as we board ourselves and our bags.
If I were to base my tip on their initial help, I'd almost never have to tip.