Carlos Mejia, of New York City, faces charges including aggravated assault following Saturday's altercation in Hardyston.
Authorities say the 43-year-old Mejia approached the bridal party in a hotel hallway before the wedding and asked for a cigarette. A verbal argument ensued, and Mejia returned to his room.
The bride and her party soon knocked on Mejia's door and yelled at him. Authorities say he emerged with the sword and began swinging it at the women but was disarmed by hotel guests.
Mejia had no ties to the wedding. The bride wasn't seriously injured.
It wasn't known Thursday whether Mejia has an attorney to speak for him.
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