Is there a specific day that the little shop stands are there that sell jewelry and shirts and various other random items sort of like individual sellers rather than the kiosk that are in the middle of the walk ways????

NO

Those little shop stands are only there a couple times per year. Not sure if they'll be allowed to set up at the mall during the pandemic. You would need to call the mall to find out.

I really don't know you would have to call up there to get your answer to that question

The weekends

I believe you are talking about the Etsy market that is hosted there every so often. I am not sure when the next one is but you should be able to search for the Etsy market in the galleria and find it

Call the mall