mjangelvortex
Pixel Perfection - I still call her Lightning Bolt
Silly Pony - Celebrated the 13th anniversary of MLP:FIM, and 40 years of MLP!
Lunar Supporter - Helped forge New Lunar Republic's freedom in the face of the Solar Empire's oppressive tyrannical regime (April Fools 2023).
Roseluck - Had their OC in the 2023 Derpibooru Collab.
King Sombra - Celebrated the 10th anniversary of The Crystal Empire!
A Lovely Nightmare Night - Celebrated the 12th anniversary of MLP:FIM!
Princess of Love - Extra special version for those who participated in the Canterlot Wedding 10th anniversary event by contributing art.
Tree of Harmony - Drew someone's OC for the 2022 Community Collab
Elements of Harmony - Had an OC in the 2022 Community Collab
Non-Fungible Trixie -

Lady of Ships and Birbs
Good guesses. You got some things correct but not everything. But still, it’s close enough.  
PurpleWonderPower
Artist -

@Background Pony #3C68  
I doubt they’re going to directly pair any of the main characters with anyone.
Background Pony #FA30
@Background Pony #86D5  
More realistic pairing between a main character and somepony else is Starlight and Sunburst. And it has been hinted at MORE then Fluttercord this season.
Background Pony #7E2E
@Background Pony #3C68  
If i was going to make some grand celebration for the finale, it would be a wedding of one of the Mane6. And Discord with Fluttershy would be the main pair. Theres even hints for that in this very season, but it might also be just a tease like Derpy/Rose or LyraBon
Background Pony #236C
Double diamond should be a bride’s man
Background Pony #FA30
Starlight catches the bouquet. She has a lot of ships going. Trixie, Twilight, Sunburst.
Background Pony #FA30
@Background Pony #5A0B  
Except the finale already has Twilight coronation happening. They’ll be o one to attend some simple lousy wedding.
Background Pony #7E2E
@PurpleWonderPower  
This is like saying the Premiere was a Celestia episode becauseh she appeared, or Starswirls episode. Discord didn’t get a single episode where he was more than minor secondary character. And based on Chinese relaeases and synopsies, that doesn’t change until the end of the show
Background Pony #8ADD
What if the Big Mac question is instead him being asked to be the Best Stallion to the wedding of Maud and Mudbriar?
CyanHide

Maud catches the bouquet without trying to and is just like ‘Who’s flowers are these?”
Background Pony #99E7
@PurpleWonderPower
 
I think he means Discord didn’t get an episode focused on him this season.
PurpleWonderPower
Artist -

He didn’t get a single episode this season
 
Um, what do you mean Discord didn’t get a single episode this season? Discord was in the premiere, The Summer Sun Setback, and it’s confirmed he will be in the finale. That’s five, possibly even six episodes, which isn’t just a lot, it’s a record.
Background Pony #7E2E
@Background Pony #3C68  
He didn’t get a single episode this season, so i think he would get a lot of minor cameo appearances instead to balance it out.
Background Pony #7E2E
I hope it is Discord and Fluttershy catching the bouquet. I don’t care about Mud Briar and Maud, and it would make more sense for Fluttershy to catch it after Angel Bunny exposed her feelings toward Discord.
PurpleWonderPower
Artist -

I highly agree with everything here except Fluttershy and Discord. I figure Maud and Mudbriar would catch the bouquet. But I love the idea of the wedding being held by the Apple/Pear hybrid tree. That would be absolutely beautiful.
Background Pony #C06A
@Background Pony #3C68”:/images/2124270#comment_8390086  
He could be in it without talking! Only John de Lancie could show up for a limited time, but Discord having a non-vocal cameo shouldn’t hurt the budget at all!
Background Pony #FA30
Discord won’t be in it. He’s already at the limit of his appearances per season. The actor doesn’t come cheap, plus he doesn’t actually like the show himself.
Background Pony #FA30
You know, it was most likely Starlight who introduced the two to each other.
Background Pony #72F9
What about the ring barer and flower girls?
Background Pony #8ADD
@Background Pony #C8A3
 
I’ve seen some speculate that the wedding will be saved for either the two parter (so they can do the classic villains crash the wedding thing) or at the very end of the last episode with this episode only being the proposal.
DTavs.Exe
Shimmering Smile - Celebrated the 10th anniversary of Equestria Girls!
Lunar Supporter - Helped forge New Lunar Republic's freedom in the face of the Solar Empire's oppressive tyrannical regime (April Fools 2023).
Roseluck - Had their OC in the 2023 Derpibooru Collab.
Elements of Harmony - Had an OC in the 2022 Community Collab
Tree of Harmony - Drew someone's OC for the 2022 Community Collab
Non-Fungible Trixie -
Philomena - For helping others attend the 2021 community collab
Twinkling Balloon - Took part in the 2021 community collab.
Artist -
My Little Pony - 1992 Edition

Échale vampiro
It’s not likely to be a wedding at all, this will be just a proposal.
Joshua
Duck - Duck cannon at high speed
Silly Pony - Celebrated the 13th anniversary of MLP:FIM, and 40 years of MLP!
Lunar Supporter - Helped forge New Lunar Republic's freedom in the face of the Solar Empire's oppressive tyrannical regime (April Fools 2023).
Non-Fungible Trixie -
Ten years of changes - Celebrated the 10th anniversary of MLP:FiM!
My Little Pony - 1992 Edition
Wallet After Summer Sale -
Perfect Pony Plot Provider - Uploader of 10+ images with 350 upvotes or more (Questionable/Explicit)
Since the Beginning  -

I can attend this marriage.
Background Pony #7D2E
@Background Pony #C8A3  
I have never heard of a marriage proposal referred to as “the big question.” It’s actually just alluded to as “the question”, as in “pop the question”. The big question is usually in my experience talking more about life direction when applied to a person, then again the last two Mac episodes have had something to do with his relationship with Sugar Belle. We’ll just have to wait and see what this is all about. We’ll know for sure in just a few weeks, sooner if China starts leaking stuff again.
Background Pony #C06A
@Background Pony #0CED  
That’s actually not a bad idea! I like that!
Background Pony #2237
@Background Pony #813C  
She could’ve been one of the bridesmaids.