Zombies have invaded the Six Flags theme park in nearby Vallejo. As of September 13th (Friday the 13th) until Halloween, the park fills with hundreds of zombies every night they're open for the annual Fright by Night program, a contrast to the more child-friendly Thrills by Day.
The changeover happens at 6pm, with a show starring "Dr. Fright" awakening creatures to roam the park whose inherent nature should lead them to feast on all the living guests, brought to you by Snickers -- seriously, human eating creatures sponsored by a candy bar.
You can see from that spooky page that the evening festivities are "not recommended for children under 12 and those who scare easily," because kids already have to wait to reach the height requirement for the roller coasters, but now we have to tell them they can't handle actors dressed as zombies. They're gonna have to learn sometime.
Also, the park used to offer "ghoul repellent whistles," presumably a signal for those actors to back off, but requests for a scarier experience means those will no longer be offered. There's no official safe word listed, so consider bringing your own rape whistle, just in case.
Nighttime shows with fearsome titles like "Dead Man’s Party," "Ghoulmaster’s Ghosts" and "Circus of Thrills" will chill you for no additional charge, but be advised that each of the "Terror Trail" walk-through-haunted-houses costs extra.
Fright by Night continues this year until October 27 only, because Halloween is on a Thursday, and they're closed during the week. Full schedule.
Six Flags Discovery Kingdom, the park that was once Marine World/Africa U.S.A., is located at 1001 Fairground Drive, Vallejo.