I took the survey, and it truly does take less than 5 minutes...they are trying to gauge interest in Citi Tours and what would be a reasonable amount to charge.
For the record, I put $10.
Dear Mets Fan:
As a loyal Mets fan, you are our most important customer. For that reason, you have been selected for this brief, five minute online survey regarding your interest in Citi Field tours.
Thank you for your continued support!