Those Bed symbols on the internet site are there for you to click on if you want to add a sleeper to your reservation. If you do not add a sleeper your reservation will be reservered coach seats. The coach cars are where you sleep in your seat and there are about 40 seats and 2 restrooms per car. Go to the site and click on the symbols and you will see what I mean. If you don't click on the symbols, at the end when you go to click on rates it asks if you want to add sleeping accomodations to your reservation. If you don't click on the symbol or the part at the bottom, your reservation will be for Reserved Coach.
We took coach 5 years ago from Philadelphia, 2 adults, 1 child and I think our rate back then was around $500 or $600 for all of us. Meals were not included but you could get reservations for the dining car after you were onboard, which you paid for after your meal, or you could buy sandwiches and snacks in the snack shop.
We are taking the Autotrain out of Lorton, VA this year with a Deluxe sleeper car, 2 adults, 1 child and our rate is $1300. This was booked back in February and the rate has gone up since then. Before the talk about shutting them down it was actually higher than it is now, but I'm still lower than the current rate. Meals are included for all passengers on the Autotrain, but there are different dining cars for coach and 1st class(sleeper) passengers.
Hope this helps.