No survey is perfect to be sure. However, I thought that the question about "what establishments you frequent other than Gen Con Indy" was a little ill defined as a question. And it was a single question just plopped in between other sets of questions which were clearly related to each other.
I took the question to mean what businesses do you patronize in Indy during the convention which are in the convention proper. Thinks like: Specific Bars and Resturants, the Mall, The Movie theaters, or (for me) the baseball stadium.
For those who were wondering, in other threads, where Gen Con got its demographic information - this survey is it.