Sunset Sound System’s Halloween boat after-party lands at The Great Northern October 25. Costumes on, dancing into the after-hours. Our annual and quintessential Halloween party is back on the San Francisco Bay. Don the costume of your black heart's desire and come on board for a ghoulish journey, Sunset Sound System style. Costume Check... strict boating rules still apply, these items will be confiscated til the end of the event by the security check! - No weapons of any kind - No toy guns, toy swords, canes, whips - No props that can be used as a weapon - No inflatable props that emulate weapons - No Whistles Times: 5:00pm - Will Call Check-In Opens & Security Check begins 5:30pm - Music Starts, Boarding 6:00pm - Recommended latest arrival time to board 6:30pm - Final boarding call 10:00pm - Boat party ends, head to after-party This event will happen Rain or Shine | No Refunds Sound by: Know:Audio Lighting Design: Radiant Atmospheres Florals by: Intrinsic Portrait Studio by: Musepop ** Please note, your boat ticket does not guarantee entry into after-party. You must purchase an additional ticket. AFTER-PARTY to Follow... SUNSET HALLOWEEN BOAT AFTER-PARTY! Sunday, October 25th, 2026 Great Northern | 9:30pm - after-hours | 21+ $10 Advanced Tickets (Pick up wristband at boat... Go straight to security entry at club) - To help make entry into Great Northern as quickly and efficiently as possible, purchase an advanced ticket and get your wristband on the boat. Upon your arrival at Great Northern you can bypass any pay line and walk in with an ID check