I have booked a return flight to Chicago and plan to spend a fortnight in the USA. I really want to ride the Zephyr to San Fransisco, coach class and I was wondering if this was a good idea to do by myself. I'm happy travelling alone but am not sure when it comes to lunch, dinner etc, would I sit by myself in the dining car? Would I end up sitting next to a family for 3 days in coach class? Any thoughts would be much appreciated.