Re: WHO & WHAT. KEITH: There was a part of him that was all nerves leading up to the evening because he doesn't like having any spotlights on him, but then he remembered how happy Shiro and his friends were going to be so, he sucked it up and stopped himself from overthinking it. And the second he did that, he was smiling genuinely and excited by the idea of surprising Shiro with a second wedding. He danced with mostly Shiro but also with anyone that showed interest, he drank, and probably snagged bites of food off people's plates when he got the chance.
At speech times, he did an awkward, "Uh, thanks for being here. Hope you all brought me money as gifts" and passed it off to someone more eloquent. He definitely disappeared before the night was over with his husband, probably carried him out there if anyone caught them leaving.
BUCKY: He's friends with Shiro and came with Nyx and Lucy! Would have also made an early retreat too cause of Lucy, but he dressed nice and they bought them a new coffee machine because who can't use more coffee in their lives? Danced a ton with his husband and let the uncles take care of Lucy for about ten minutes so he and Nyx could get up to shenanigans in a dark corner somewhere.
MARGO: Came wearing this! Would have dragged any of her friends that were willing to come along and brought straight up money to gift the boys with. No speech, but lots of dancing and drinking with anyone that was up for it!
MEI: She loves the Voltron boys, so she came wearing this and showed them a video feed of the newborn bird AIs that was hatched recently to help replace the batch that had been taken out during the creepy fuckers attack. Then she explained that two of them were theirs when they were ready to be raised away from the Aviary. Then she proceeded to drink, eat, and dance with everyone she knew and made not so subtle heart eyes at Mako whenever she thought she wasn't looking.
NICK: SURPRISE, FUCKERS, IT'S YO BOY. He came wearing this because I feel like he has to show up in costume every time he returns and isn't this wedding appropriate??? His hands and shoes were also covered in dirt and he had with him a bag of money that he gave generously to anyone he recognized, including Shiro. Mazel tov!