A clue for the requests

Find that which is hidden in plain sight. Bletchley will guide you once you’ve made the discovery. While at the park rest under the Ana tree to think about the final solution.
Good luck on your adventure may Droppy protect you.

Don't throw out the I, we need it for next year!

Oh no, droppy just dropped this supercool picture of the con. And this link: events.humanitix.com/crikeycon-ix. How clumsy!