Is there a cancellation period for SEA LIFE Birthday's? The Birthday bookings can be cancelled with full refund up until one month prior to the party. Any bookings cancelled within the month of the party will be non-refundable. Was this article helpful? Related articles How do I cancel my LEGOLAND Pass Monthly Membership? How do I buy a ticket to SEA LIFE California? I would like to cancel my booking? How do I book a private event to SEA LIFE? How do I change my address or Membership contact information?