Puzzle

ACROSS

  1 Expire, as a subscription

  6 Some movie theaters

 10 Animal that oinks

 13 Portion out

 14 Put on a pouty face

 15 Raunchy writing

 17 Miso and udon dishes

 18 *Improvise (see letters 6 to 9 in this answer)

 20 Get-together, casually

 21 Where poodles are pampered

 22 "Midsommar" director Aster

 23 *Home in a tall building (7 to 12)

 26 Arcade game pioneer

 27 Precursor to rocksteady

 28 Number that shares a key with @

 29 Problem

 33 Poodle's annoyance

 37 *1979 Rod Stewart hit whose title is a question (1 to 3)

 41 The "S" of GPS: Abbr.

 42 Aetna competitor

 43 Overtime cause

 44 Hosp. surgical areas

 47 Windshield hazard

 49 *Shared characteristics (4 to 8)

 55 80, for Dr. Fauci

 56 Professional pursuit

 57 Showroom model

 60 Workplace respite, and a hint to the starred answers' indicated letters

 62 Consume completely

 63 Rogen of "Steve Jobs"

 64 Kept in the email loop

 65 Like a fresh muffin

 66 Retirement benefits org.

 67 Egg farm mothers

 68 Poker entry fees

DOWN

  1 Glasgow girl

  2 Hand cream additive

  3 Teddy bears, e.g.

  4 Bush of "One Tree Hill"

  5 Mars rovers, perhaps?: Abbr.

  6 According to

  7 Prefix meaning "many"

  8 School group

  9 Uses a certain video chat program

 10 K-pop star who rose to fame in 2012

 11 "To be clear ..."

 12 Watch over

 16 The Chicks, e.g.

 19 Support with funds

 21 Engage in an online scam

 24 Stick-to-itiveness

 25 Bumbling ones

 26 Out of town

 28 Six-pt. plays

 30 (This wasn't my error)

 31 College, in British slang

 32 Heart test, briefly

 34 "We need proof!"

 35 Walk off the stage

 36 Assent that sounds like a vowel

 38 Molecule component

 39 Conclude through logic

 40 "Mary Magdalene" star Rooney

 45 Loser to paper

 46 Grab

 48 Most likely to win

 49 Airport-to-hotel transports

 50 Folklore meanies

 51 Swim team events

 52 Blink of an eye

 53 Macho sorts

 54 Plants used in basketry

 58 Creative inspiration

 59 Goes (for)

 61 "I figured it out!"

 62 Thurman of "Gattaca"

Solution