I was just wondering if their is a way to know where my BR sleeper is located in relation to the rest of the train? Am I in front or back of train, am I near the dining car or near the coach cars? We will be in car #531 room D on the California Zephyr from CHI to EMY. I dont know if they keep the cars in the same place or if they change them around on different trips. Im sure their are Amtrak railfans who know so much that they may be able to tell me something. Thank you.