News has come in from people at the site that the Sunrise Celebration has been cancelled due to bad weather.
GladTalk was unable to confirm this officially with the organisers at the time of writing (edit: it has now been officially confirmed, see first comment). The official site at 6.09pm was saying:
Please do not leave home for the festival if you are still waiting to leave. We are experiencing ADVERSE weather conditions and will need to make a site assessment in the coming hours. Currently, the police are not allowing any access to the event until this review has taken place. We apologise for any inconvenience and will inform you of any changes via this website. 29th May 18:09
More news when we get it. In the meantime, you can follow developments in the forum.