If you are interested in renting a car, Alamo had a desk right in the Orlando Station. Otherwise, we would get off in Kissimee and get an Uber or Towncar service. The Kissimee Station is less hectic getting off as a lot more people get off in Orlando.
Yes Kissimmee is closer to the parks and might save you some on cab fare, but if you are coming from the north it's also another 20 minutes on the train so it really doesn't get you to your destination any quicker.
We take the train all the time and always do a car service to/from the station. The services we use will keep an eye on the train status and send the car to later if the train is running late.
Thanks for the replies. I have taken the train several times (from the North) and have gotten off at Orlando. Always had a service pick up up, but can't seem to find the same company anymore. I did make my reservations with Amtrak and a limo service from Fl tours. Thanks again everyone.