We usually go twice a year and we always take the auto-train. We live in Northern Baltimore County and it takes about 1 1/2 hours to Lorton, Virginia. We put our extra long Expedition on the train filled with everything we want to bring. We always get sleepers. It is so relaxing. They serve a nice dinner and breakfast, play a movie, have a lounge car. The kids always bring Legos. It leaves at 4pm and arrives the next morning by 9am.
I think we have travelled on the autotrain many times and have never had an issue. We bring 3 kids - 4, 6, & 8. They like it a lot too.
We usually just take it down to Florida as we try to stay at Disney's Hilton Head Resort after our WDW trip. Believe me, the train is way more fun than driving!
Sandie