On the paper inflight surveys I've done a lot of them and as a result have a lot of CX pens. No free flights though unfortunately.
On the recent electronic survey there was a question about a 'quiet zone' so that you could sleep or work. I had my usual rant against closing window shades during day flights but pointed out that if you have a quiet zone for working you want natural light, and if you want a quiet zone for sleeping you want the cabin dark. Surprising someone hasn't thought that through.