Free entry: Under-5s enter free. Registered disabled visitors have free access to the island and exterior areas; castle-interior access is not step-free, and a free touchscreen virtual tour is available on request in the Visitor Centre.
Sold out? There are no advance or timed official tickets to sell out. Buy admission at the Visitor Centre ticket office on arrival. Arrive before the published last-admission time (generally one hour before closing); if entry has closed, view and photograph the castle from the mainland exterior.