A4 Pizza: Always casual, never reservations. Beer, pizza, Hoodsies.
American Fresh: Slumbrew's Assembly Row beer garden will be keeping things laid-back. (Don't worry about the snow — it's a heated tent.) Snag a charcuterie board and a couple of beers; it'll only set you back around $25.
Audubon: Yep, it's a 50 Shades of Grey-themed dinner and party. Dinner is served from 5 p.m. to 10 p.m. (both a 50 Shades prix fixe menu and the regular a la carte menu), and at 10 p.m., the Fenway restaurant becomes "The Red Room" dance club (a DJ, photo booth, an outdoor patio bar with frozen cocktails, and snacks). While reservations are being accepted, walk-ins are also welcome for both dinner and the party.
Cuisine en Locale: The Somerville event space is offering an a la carte menu as well as a three-course prix fixe ($35) — oysters, lobster pasta, Taza chocolate cake. Reservations "happily accepted," but walk-ins are also very much welcome.
Dali: This longtime Somerville restaurant offers a wide range of tapas, a kitschy-yet-romantic ambiance, and plenty of classy booze. Reservations are available for seatings before 6 p.m. (Dali opens at 5:30 p.m.), but the rest of the night is first come, first served.
The Gallows: The regular menu will be available, "sprinkled with a little extra love," and bar seating will be reserved for walk-ins.
Highland Kitchen: As usual, this lively Somerville spot won't be taking reservations. While no specific details have been announced, the restaurant tells Eater it'll be a "fun" and "casual" night.
Lincoln Tavern & Restaurant: This South Boston restaurant is treating Saturday like any other day and encouraging friends to spend time together rather than couples. Walk-ins more than welcome.
Nebo: Pizza and pasta on Atlantic Wharf — no special prix fixe menus (but there might be a few specials available). Walk-ins welcome.
Neptune Oyster: This North End hotspot never takes reservations. You'll have to wait in line, but some of Boston's best lobster rolls await you inside the cozy restaurant.
Shake Shack: Keep it ultra casual with quick-service burgers. On Valentine's Day, the chain (local outposts are in Harvard Square and Chestnut Hill) is offering a buy-one-get-one-free shake deal if you bring a date. "Love means never having to share your shake," notes a press release.
State Park: The Kendall Square restaurant is hosting a Lady and the Tramp-inspired night, complete with chianti in traditional straw-wrapped bottles, breadsticks, and "one giant plate of (bbq) spaghetti," served on a table bedecked with a "romantic tablecloth." Forty bucks a couple; no reservations. "Just get a date and come on in."
TRADE: The Atlantic Wharf restaurant promises a casual night with the full regular menu and a few specials. While reservations are accepted and recommended in the dining room, the bar and kitchen bar areas are saved for walk-ins.