You will be glad you got them!!! Thankfully I'm not a germaphobe or anything like that, but having ridden the train from Jacksonville, FL to Jesup, GA once, and to Charleston, SC a few times, I can tell you that the restroom situation is usually not amazing, and certain odors may permeate the entire car depending on who is in it and where your seats are located.
I've always ridden by myself as a young adult visiting friends and family, and when you have a stranger sitting next to you, it is always a good idea to have something to occupy yourself with - usually a good book for me, or my portable DVD player.
It is usually cold - I've ridden in July and November and both times it was freezing. In July I actually got out my bag (I always just carry it on) and pulled on sweat pants and a hoodie over my tank top and shorts and was still chilly, but I do tend to run cold.
For me, the seats are not at all uncomfortable, but I have heard horror stories of old and damaged seat cushions, etc, that made sitting for upwards of 6 hours unbearable. Some people like to bring a seat pad, it just depends on how much cushioning you like.
That's all the tips I can think of for right now having ridden the train a couple of times, but I usually just fall right to sleep between stops. Hope some of this helps!
The only thing we have to pay for now is our transfer from the train station to POP and we can't pay for that until we are picked up! We won't need money for food because we have Free Dining too!
Friday will tell the tale-we will have all 30 4K for the first time, but I know everything will be fine!
I'll just order on 
The train trip for her and her two children though was 24 hours, so it was a long ride for coach. They also were a party of only 3 which meant she had to sit with total strangers for most of the trip. She said the train was very cold( I had heard this previously) and you could hear every snore, cry, whine, etc. The bathrooms were not very clean, so I am already prepared with Lysol Wipes and spray! 
Our trip is only about 9 hours and part of that will be during the middle of the night. If we don't have any major delays we should be okay. I've already gotten travel blankets and pillow for the kids so everyone should be nice and snug! We'll already be dressed in warm clothes anyway since it will be the middle of December. The kids can go to sleep in sweats so all we will have to do is wake them up enough to get in the car around 1:30/2:00AM and they can sleep to the train station which is about 35 minutes from our house. I may let them sleep if it's not too cold in the car until the train arrives, especially if it is delayed. It's a very small train station located behind a hospital. The parking lot is only steps from the door of the train station-I would be able to see every car in the parking lot from inside!
Truth be told, I actually found the Lysol Wipes in a resealable bag instead of the cylinder container at BigLots(lots easier to pack) and the flushable wipes and small bottle of air freshener in the Travel Size section in our local 
