Three people have been taken to hospital after a fight at the Ramada Park Hall Hotel, Park Drive, on Saturday evening
Nine 999 calls were made to Grade II listed 4-star hotel after trouble flared at around 9.30pm.
Three men were seen with facial injuries, although no-one has reported being assaulted, said West Midlands Police.
A teenager girl, who had been working at the event, was treated at the scene for her injuries and was taken to New Cross Hospital.
Two men, in their 20s, were taken to the same hospital with injuries from the brawl.
And another man, in his 40s, was assessed but chose not to go to hospital – against the advice of paramedics at the scene.
A spokesman for West Midlands Ambulance Service: "Given the initial description of the incident and suggestions that there were numerous casualties, we sent three ambulances, a paramedic officer, the Hazardous Area Response Team to assist with triaging and the mental health car which has a paramedic, police officer and mental health nurse.
"Ambulance staff rapidly assessed a large number of potential patients."
It is understood that the father of the bride contacted the hotel to offer a formal apology.
A Ramada Park Hall Hotel spokesman said: “Having hosted hundreds of weddings we have never seen scenes like this.
"We do not accept this behaviour and would like to praise the quick thinking of our team who immediately contacted the emergency services.
"We’re in close liaison with all staff members who were present on the night and are ensuring that they get all the support they need.”
Anyone with information is asked to contact the force via live chat at www.west-midlands.police.uk between 8am and midnight, or by calling 101 anytime.
Alternatively, contact Crimestoppers anonymously on 0800 555 111.
Quote crime reference 20WV/241903A/19.