At £55, I can't imagine that tickets will last long. Not when you get to spend a day listening to talks by @rachelandrew, @ianfeather, @una, @stopsatgreen @iamashley and @jaffathecake.
Add to that the warm and enthusiastic @hey_stac community... this is going to be a good 'un! https://twitter.com/hey_stac/status/960586177161068544