The Neptune Pool parties are scheduled for the evenings of July 6, August 3, August 24, and September 21.
Travelers can take a tour of the castle for $25, but for an invite to a Neptune Pool soiree, tickets are $1,250. (Tickets for Hearst Castle are $950.) Tickets are available online and are first-come, first-serve with most pool party dates going on sale on July 1. Each pool party is expected to cap occupancy at 40 people.