Looks like my mind decided to go totally blank for a while today... took me a while to realize the missing BI and ACE (great themers, loved DORASBOX). The NE tripped me up - I totally overthought the ASPS clue seeing "snakes" as a verb, and I immediately knew that 12D was wedding-related but couldn't think of the word PRENUP for the life of me. SAVEME is probably my favorite clue-answer pair, and the math geek in me really liked PLANE. Really fun solve overall!
One who might insist a sandwich must have a classic shape with two separate pieces of bread and toppings in between
15A
Have an open tab, say
16A
Shopping ___ theory (Internet-created test of morality)
17A
Less likely to elicit a laugh, perhaps
18A
*Mania over Campbell's soup?
20A
Slightly runny
22A
"The Vampire Diaries" protagonist
23A
Buddy in Bordeaux
24A
Egg holder
25A
Get very quiet
26A
"As a lesbian, I'm used to being unable to tell what is and isn't a ___. Consequently, this Pride, I'm partnering with Microsoft Excel..." (DJ Cthulu tweet)
28A
Drink that might be served in a Darth Vader tiki mug
31A
Hayley Kiyoko's "This Side of Paradise" and "I'm Too Sensitive For This Shit", e.g.
32A
Indicator that one is over 21, sometimes
34A
Part of potatoes
36A
*Bad vibes between two bros who just can't seem to hang loose?
39A
Having a lot of 3D
40A
Certain succulents
43A
Amts. that determine winners
46A
Topic of much discourse among fashion history enthusiasts
48A
Off course
49A
"Thanks for clarifying"
51A
"F"
53A
Remote working needs??
54A
Cookies featured in a Pride commercial directed by Alice Wu
55A
Becomes a monster, perhaps
58A
*Trove found by a cartoon explorer?
60A
Come to fruition
62A
"My cage has many rooms/Damask and dark/Nothing there sings/Not even my ___" ("Sweeney Todd" lyrics)
63A
Sappho wrote one to Aphrodite
64A
Last
65A
Oft texted times, for short
66A
Urge
67A
Took a break
Verticales
1D
British pols
2D
Type of restaurant that's the setting for an "Agent Carter" scene where Peggy has an emotional conversation with her "good friend" Angie while "Someone to Watch Over Me" plays in the background
3D
Seriousness and dignity, as displayed in my very serious crossword clues (as long as you disregard that this comes right after a clue about "Agent Carter" femslash)
4D
River with White and Blue tributaries
5D
Ones who commonly use "fuckyou", "fuckyou1", and "naruto" as (not very secure) passwords
6D
Go live online
7D
Shoes that are definitely a part of lesbian culture, for short
8D
Part of afk
9D
Precipitation mentioned at many Pride parades
10D
Line from Washington, D.C. to Boston
11D
Text that might be sent during a bad date
12D
Contract signed before forming a union?
13D
Parts of some gay sex
19D
Geek & Sundry creator Day
21D
Comedian James who criticized "challenging" transphobic comedy by saying "You know who's been long overdue a challenge? The trans community. They'll all be checking their privilege on the way home, thanks to you, you brave little cis boy."
23D
Things blocked by uBlock Origin
25D
Pixar movie whose soundtrack includes "Route 66" and "Life is a Highway"
27D
Birds despicted on Sydney rock engravings
29D
Couples, in tabloid speak
30D
Workers essential to leather culture
33D
Mine includes re-gridding about 20 times
35D
"___ Papi" (John Paul Brammer advice column)
37D
Icy subject of some Monet paintings
38D
"Guess we're stuck here forever"
41D
Experience of some members of the LGBTQ community, as depicted in the starred entries
42D
___ admin
43D
Type of skirt popular in the 50s
44D
Larynx's location
45D
Boggess who played Christine in both "Phantom of the Opera" and "Love Never Dies"
47D
"You refuse to buy into society's petty, narrow-minded definitions of good and evil, or at least that's what you tell people when they notice you're a lousy ___." - "The Onion" horoscope
50D
Softens, as beans
52D
Word after inclined or complex
55D
Bits of R or C
56D
Animals who have a tendency to drown in rivers in "Oregon Trail"