I just completed this survey yesterday. I have a trip starting on Monday and this was the first time I've gotten this survey.
I took a few screen shots of the screens which have questions about FP+ in general, as well as the ones that ask you about your booking and website experiences. I'll edit this post and post them if any one is interested in seeing them.
The survey was very targeted, and didn't have any where to make general comments. They even went as far as to provide this disclaimer letting you know that they didn't want your overall general opinion...Lol (Although they state that they encourage you to share your opinions, there isn't any open comment section to do this. They just mean by answering the questions...)
"We appreciate your taking the time to participate, and encourage you to share your opinions; however, please note that we are not soliciting any ideas or suggestions. By participating in this survey, you consent to our unrestricted use and disclosure, without any compensation or obligation to you, of any ideas or suggestions you provide us in connection with this survey. Please be assured that we will not use any of the information you provide to us in connection with this survey to market any products or services to you."