our family has done the auto train 4 times from lorton and loved it. Even going coach. Have never had a problem finding extra seats to spread out on. Much better than driving from Pennsylvania, where we live.
Since DH is a train freak, we just took amtrak from pennsylvania to chicago, then albuquerque, then from denver back to chicago then back to pennsylvania (3 overnights on train!)
I will never, under any circumstances, ride any other long distance amtrak train again, except for the auto train. (I am writing a "trip report" for the new president.
So I would say, if you can take auto train go for it.
If any other amtrak run the other direction.
Erin Cox-Holmes