The idea of a U.S. film festival sticking to its dates in 2020 with a fully programmed, all-physical, non-virtual slate of screenings? It might seem beyond possibility, but then, the suspension of disbelief is particularly accentuated at L.A.’s annual Beyond Fest, which programs “genre” films every fall at the American Cinematheque’s Egyptian Theatre in Hollywood. With all indoor theaters in the county currently mothballed, the celebration of horror and fantasy moved to the most fantastical of SoCal places — Montclair — for a week of double-features at the Mission Tiki Drive-In, wrapping up with Thursday night’s riotously received world premiere of Blumhouse’s “Freaky.”