Definitely call and with Amtrak call again a few days before you are due to depart. I made reservations for a lift to a departure point from which I had planned to ride back home from. Verified they could take a bike and other luggage so I was billed, got a confirmation. Six months later I called to verify they had some bike boxes available and was told that the train I was on didn't have space for anything but maybe a small bag in the overhead rack. Seems they decided to switch trains from one with all services to a commuter with none; only an overhead rack. They never bothered to send me a notice or anything. Check in with them often and expect surprises.