Hyatt Regency Orange County Location 11999 Harbor BoulevardGarden GroveCA92840 Next Event Tremaine - Anaheim, CA - April 18, 2026 - April 19, 2026 - All Day Loading Map.... 11999 Harbor Boulevard - Garden Grove View Events 33.789555 -117.91657 Upcoming Events Tremaine - Anaheim, CA - April 18, 2026 - April 19, 2026 - All Day