I do the survey not on TV but the written kind whenever I have a BAD experience and a VERY GOOD experience. I suspect that all my inputs went into an empty buckets, because I never see any results published anywhere.

One time the experience was so bad that I wrote an addition letter directed to the GM of the property (some years ago at Tyson Corner Marriott where a pipe broke in my room while I was asleep). Never even received an apology. I have never returned to that place since.