Well I was doing my daily checking on Amtrak yesterday and noticed the Oversized Vehicle cost had jumped up to one-tier higher. It's $50 more but it started to concern me if there are more oversized vehicles, it may mean more families and they may eventually book rooms too. I was so concerned that our room cost might go up that I decided to just pull the trigger...and upgrade us! 
I must say that calling Amtrak has NEVER been a quick experience but that's okay. Since I was booking 2 roomettes for five people, I could not do that online. I've had my issues and always get them resolved. There was NO issue with me putting two kids and one adult in the roomette, though the phone agent said he HAD to inform me about the size. I told him I was VERY familiar with the size, that I've stayed in the rooms before.
I also stressed to my in-laws not only about the size of the roomette but the climb to the top. It's not for the weak, so hopefully they will be okay with it. 
In any case, I did find that when all was said and done, despite the long wait, I did NOT get charged extra for the vehicle. It was the same price as I had booked it originally, and not the $50 more that it was online...so that was nice. He did warn me ahead of time that I'd lose out on the special $25 kid fare, but considering I also got to apply my AAA discount to all of us, it only cost me an extra $37 for the rail fare in the end. 
And now I don't have to check the Amtrak sight EVERY DAY any longer to make sure the rates don't increase on the rooms. It's done and we will be getting roomettes for our trip!
Yay!! So glad you got your rooms. Thanks for the update on 3 people (2 kids and one adult) in a roomette.
Also, periodically check your Amtrak rates ... not religiously but sometimes they do decrease if you are going at a non-popular time.
I've been tracking (mostly) since Jan 13.
In that time, it has been late 33 times, and early 75 (never "on-time").
Mostly around an hour, but in one extreme case, it was almost 6 hours.
DW thinks I'm crazy tracking the arrivals and departures.
Thanks for the info!
Over the last 12 months that Autotrain has had an 80% on time rate going to Florida, and an 86% on time rate coming back. Worst case over the past month was 101 minutes late but there were also times when it arrived up to 116 minutes early.
Nice to know!
The Auto-Train does have a much better on time % then the Silver Service Trains to Florida. One caveat to those of us traveling in the Summer, is that heat restrictions are implemented when temperatures reach a designated level and trains must travel slower than normal. As this obviously depends on the weather, it does vary from day to day in the Summer. Also anyone traveling to Florida during hurricane season needs to monitor the weather and conditions for railway closures due to winds and flooding. We once had to leave a day early as a storm was approaching South Carolina/Georgia and Amtrak cancelled service. One year our train was delayed two days due to tropical storm that hit Florida. Always buy
trip insurance..it's worth it.
Good to know...we are going in July this year so I'll just expect to be late(r).
Thanks for the replies. It looks like I will let the rest of my family know to get an early afternoon arrival time at MCO. I figure it will be more of an adventure for my girls than the adults to hang out and wait at the airport.
For those of you with small kiddos, what do you take along on the train to keep them entertained (girls will be almost 5 and 2.5)?
The first year I had each girl pack a small kids suitcase of their clothes and toys (coloring books, small barbie-like dolls, DVD player, Leapster, kids magazines, card games, new happy meal toys, stickers, etc.) But we found that was too much. The girls really do enjoy looking at the window and walking around the cars. Plus , there really isn't that much free time between snacks in the lounge car, dinner and movie.
Now I take one small kids suitcase and 1/2 of it is our clothes and the other half is filled with toys -- one coloring book, dvd player, leapster.
I also only take very few snacks and no drinks (since the rooms come with free water bottles).
Yes there is a cafe car. I am unsure if they charge for ice.
In the sleeper cars at least, there is a small ice bin at the top of each staircase.
Do the coach lounge cars have room for a lot of people or should I just plan on it being full and staying at our seats? We will be traveling Aug 5 which is a Sunday.
Yes, the lounge cars fill up quickly. If you are interested, have one person go to your room/seats and drop off your stuff while the other person goes to the lounge car to get your seats.
There is more room in the train than in a car or airplane. He can get up and walk around and sit in the lounge car with lots of windows..
I was going to say the exact same thing. The train is so much more open -- larger windows than a plane or a car, and ability to walk around. Also, on a plane, they don't really like people walking around but on the train it is the norm to walk around. The lounge car and dining cars are really nice -- big open windows, lots of space. Bright sunshine. If he doesn't like the room/seats, then just plan to spend most/all your time in the lounge car.
So when we check in they will assign us our seats, correct? Then maybe I can have me and the kids snag lounge care seats(since I booked us on the lower level) and I can have dh go throw a blanket down on our LL seats?
Absolutely! THis is what we do each time. If you are set on having lounge car seats then you need to get there right away.
They also have little paper trays so you can bring your snacks back to your seats/room if the lounge car is filled up. If you do find it already full, get your food to take back with you then try again in 30 minutes or so...it'll start to clear out and you can sit there later.