Okay, this is starting to look more like a party at the gym. However, there are differences compared to the other previews. In one preview, there are only two steps visible in the background, while in the other preview, there's a bleacher. It could be the same room, just from a different angle.
Looking at Josy's eyes, she's looking past the MC, towards someone standing to the MC's left. You can tell because the blue floor marking is interrupted by a flesh-colored body part. Josy's dress is, of course, amazing, just like Maya's. I don't know if the makeup is on Josy's cheeks or if her cheeks are flushed again because she's embarrassed. Then I think the girl dancing directly in front of the MC could be Sally. The figure fits, and you can see blonde hair at the top
I've never seen Sally partying with the Alphas, but I have with the HOTs and the DIKs. Chad was also at the party. No, Blue Milk, I'm still not expecting a joint party for the ALPHAs and DIKs. But I could imagine Chad being at the DIK party because he might not be an ALPHA anymore. Troy was also kicked out of the ALPHAs because he beat Dawe. Dawe wasn't president of the ALPHAs at that point. But Dawe has to decide what to do now. At the end of Episode 11, Chad and Caleb were fighting. Who would Dawe be more likely to kick out of the ALPHAs? With Chad, they lost the important competition for the ALPHAs, and Caleb is significantly stronger than Chad. I'm just saying, 700 pounds. Maybe Chad will leave on his own after what happened with Caleb.
What if the DIKs have their party in the gym? The MC could have two options to secure the gym for the New Year's Eve party: win the fighting tournament or get along well with the college staff during their Christmas party. Perhaps he'll also run into Rusty's father, and he'll make an order so that the DIKs, and not the ALPHAs, can use the gym. Perhaps as compensation for the ALPHAs destroying Rusty's father's property.