Just to inform everyone. I received an e-mail from Bungie as well (I assume for the same reason as the others here).
If so, there should be a link to a survey here. Since I got an error message just like the rest of you I want to the main site for the surveys where it asked me to enter the code of the survey manually.
When I copied the ID from the original link in the e-mail from Bungie it told me that:
The survey ID you entered is not valid.
I myself just received the original email around 3.5 hours before typing this message so while this could mean that we are too late it could perhaps also mean that the link provided was perhaps incorrect or (considering the time frame) that perhaps the survey is not up yet (though unlikely).