Padma hates that family, and Jyoti has lost face, so here is what I think will happen.
Poonam, who has issues w/ the way Jyoti handled the allegations in the trial by letting them go uncontested, will refuse to want to be there amidst all that, and get her dad to invite the Sharmas on a day that deliberately conflicts w/ the wedding. He'll invite Jyoti as well, and since Jyoti can't go to Pankaj's wedding, she'll have to go there. Deepu too would have to go, and Padma would prefer the company of the Trivedis to the Vashisths. So either these 4 would be @ the Trivedis, or Jyoti will have some errand due to which she can't be there.
Due to Jyoti's persuasion, KK & Dadi may attend due to Sudha, but I also think Sudha and Uday may refuse to have anything to do w/ it - Sudha due to Jyoti, and Uday due to not just Sudha & Jyoti, but Neelam as well. After all, Neelam is the gal that Uday left @ the alter, so he's not going to be comfortable around her. In fact, I think Uday & Sudha may leave this house after today. If these happen, then even KK & Dadi may not go. Sushma might accompany KK & Dadi, since she feels totally out of place w/ Poonam.
The other possibility is them all (except Jyoti) going to the Vashists, and Poonam hearing something said about her, and how she's the SIL of Pankaj's ex-wife. Once she's insulted, she'll insult Pankaj about being blind, probably in front of CM, and sparks will fly. While Deepu wouldn't hesitate to scold Poonam when she insults Jyoti, he'll probably stand up for her when she's insulting Pankaj & Bhairavi, and that will make that wedding interesting. That will embolden Poonam more, and she'll probably make that wedding memorable for both Pankaj & CM, and not in a good way. 🤣
Seriously, if the Sharmas are a sane family and not just listening blindly to their idealistic daughter Jyoti, they'd all just boycott this wedding. After all, Sudha's rishta aside, the bottom line is that this wedding is happening after their own daughter has been insulted, abused and thrown out. It was one thing when they attended Uday's engagement - Sudha wasn't Uday's wife who was being robbed of her suhag, but in Jyoti's case, she is Pankaj's wife, and her marriage had to be sacrificed for this to happen. Any self respecting family would stay away from such an event, rather than give it more legs.