From 9 p.m. to 1 a.m., multimedia brand BLCKNLIT and Full Service Radio take over the lobby bar at the Line hotel with spooky drinks and bites. The radio studio will host an immersive visual and audio experience. Costumes are encouraged, of course.RSVPhere.

The Shaw barbecue bar is hosting “A Very Red Apple Halloween,” using the work of director Quentin Tarantino as a theme. There will be multiple prizes — including a $500 grand prize handed out at midnight — handed out for the costume contest. So people can expect to seePulp Fiction-era Uma Thurman costumes or World War II-era outfits modeled after Brad Pitt inInglorious Bastards. Tarantino-themed cocktail specials will flow from 5 p.m. to 2 a.m.

A “Hallow-Scream” karaoke night at the Shaw dive bar includes a free bar tab for the ghoul donning the best duds. Specialty drinks include a shot wheel, blood-bag cocktail and more. Next door at sister spot Brixton, there will be DJs on all three levels.

The Mexican beer garden is doubling down on Halloween and Día De Los Muertos, running happy hour from Thursday, October 31, through Sunday, November 3, with $6 shots, $9 margaritas and $5 tall boys. The Espolón Tequila and Modelo Especial-sponsored long weekend includes special activations like a face painter on Friday.

A two-hour timed entry pass to Drink Company’s精致的聖徒en pop-upincludes candy, a costume competition, and drink specials all night. Come early on Wednesday, October 30, for the release of Devils Backbone Brewing Company’s “Death Becomes Us” (6 p.m. to 9 p.m.) as part ofBYT’s upcomingtrue crime festival.

The beer bar’s “Night of the Living Ales” party returns for the ninth year on Halloween eve (Wednesday), featuring 20 drafts and 20 half-price bottles. Options include Allagash’s Ghoulschip and Burial’s the Allegory of Immortality. And on Halloween, head to Fairfax sister bar B Side at 4 p.m. for a throwback Thursday costume contest and discount treats.

The spooky Heurich House Museum throws a Gordon Biersch-sponsored happy hour in its Castle Garden while playing 1922 silent German horror classicNosferatu. For $10, dare to enter the historic home for tastings ofSenate Beerand specialty cocktails from 6 p.m. to 8:30 p.m. ID famous vampires dangling inside for a chance to win prizes. Must be 21, and costumes are encouraged.

The Miami import’s day-long Halloween party stars live Criolla music, dancing, bites, a raffle of Pisco Cuatro G’s Bottle during happy hour, and — most importantly — half-off pisco sours all day. RSVPhere.

The modern neighborhood bistro in Mount Vernon Triangle throws a “Boos and Booze” party (6 p.m. to 1 a.m.) starring specialty cocktails with Bluecoat Gin, FEW Spirits, Brenne Whiskey, Widow Jane Whiskey, and Mezcal Vago and dishing out prizes for the best costumes.

Like Nirvana? Then you’re going to love the H Street NE venue’s “Halloween Smash” that features live tributes to the ‘90s alt rockers, Iron Maiden, and more.Ticketsare $10, doors are 7 p.m.

White Ford Bronco, D.C.’s favorite ‘90s cover band, performs at the Nats fan favorite on Halloween. Along with costume contests, raffle giveaways, and tailgate games, drinkers can plan to drop $8 on White Claws and domestic brews. White Ford Bronco’s set kicks off at 7 p.m., and doors open at 5pm. Tickets are $20 onEventbriteor $25 at the door.