I got one yesterday, for our LSL trip last year. Interesting that we did not get one for the TE portion of the trip. I thought the questions were mostly useless, and it all seemed to be a marketing ploy. Example: One of the questions was about how did we get to CHI to begin the trip. A train was not one of the options with a radio button. SO I put the TE in the "other' box. I was next asked how many minutes it took to get to CHI. I tried to put in 24 hours or 1300 minutes, but it would not let me put in anything over 300 minutes. And the last 5 or 6 questions were purely marketing questions that had nothing to do with the LSL trip. All in all, IMHO, it was a waste of time.
I wholeheartedly agree that a good comprehensive survey on line would be a great tool for Amtrak to use, this, IMHO, was not that.