Will all of the guests turn up?

We only announce guests once we've agreed with them that they're coming, and they're happy to be announced. However, guests have lives, and we can't guarantee that a particular guest won't run into issues that prevent them from turning up. If that happens, we'll update the site and programme as soon as reasonably possible. Given the number of other guests that would still be left, we think that people will have a pretty awesome time regardless.