The survey has been sent to at least one of my accounts now (I haven’t checked the others).
However I’m not sure it’s authentic. The text reads, in part:
“We appreciate you so much. Your opinions are extremely valuable and inspirational to us here at CCP, and will help improve New Eden and EVE Online.”
“Please know that all of your answers and opinions will remain anonymous and private, and we always appreciate your openness and honesty.”
I’m not sure who the “we” they’re referring to is, but it sure doesn’t sound like CCP to me!
As far as finding the Character ID, I used this for reference and got mine off zKillboard:
Survey still didn’t work, regardless. (Also tried character name, and email address since the same question also refers to that. Still broke. Like my heart, CCP… like my heart. Why you do these things?)