I am reading The Great Gatsby, and would like to know what "if we had room for him" means in the following sentences:
"Biloxi?" He concentrated with an effort. "I didn't know him. He was a friend of Daisy's."
"He was not," she denied. "I'd never seen him before. He came down in the private car."
"Well, he said he knew you. He said he was raised in Louisville. Asa Bird brought him around at the last minute and asked if we had room for him."
"He was probably bumming his way home. He told me he was president of your class at Yale."
In this part, Daisy, her husband Tom, her lover Gatsby, her relative Nick, and her friend Jordan engaged a suite parlor in the Plaza Hotel to have some mint julep on this stifling day. As Mendelssohn's Wedding March was heard from the ballroom below, Daisy and Tom recalled that their wedding day was also very hot and that someone named Biloxi even fainted. Biloxi was carried into Jordan's house because it was very close to church, and stayed there for three weeks.
Here, I could not grasp what "if we had room for him" means here. Did Asa Bird—presumably their friend—bring Biloxi, who wasn't their friend and thus was uninvited, at the last minute of their wedding and asked if they had some vacant seat for him? Or did Asa Bird bring the fainted Biloxi to them and asked some space to lay him down? Or was Asa Bird finding a room for him to stay for a while?
I am completely clueless. I would very much appreciate your help.