Wonder Woman Flight of Courage will be Magic Mountain's 20th coaster.
L.A. County theme parks can now increase their capacity to 35 percent.
Both parks will open to passholders and members before welcoming the general public on April 3.
Six Flags Magic Mountain and Legoland California both announced new, ride-less events Thursday.
The theme park industry still wants the state to lower its reopening standards, but even then, no county comes close to meeting those metrics.
The Holiday in the Park Drive-Thru Experience will run on select dates from Nov. 20 through Jan. 3.