Welcome to Flyertalk!
I completed the survey, but there are some analytical/methodical issues with some questions.
Also, the the comment on the last page "You have already completed this questionnaire. Thank you for your help." is a little odd. It suggest my info wasnīt recorded as I had already participated some time ago. I guess itīs an error, so Iīd modify the last page to "You have successfully completed this questionnaire ...."