Documentation happens. If you are in a house normal procedure is to get a good look at them, run to the exit of the house where security is tell them something happened and wait for them to come out.
If you are in a street it’s more likely than not that they get away, the rate of punches is higher, and also I’ve found that those on stilts quit quickly due to how unsafe certain streets can be. There is a whole process for tracking guests down (and then once they’ve been tracked down with how to proceed) outside of houses however.