he was within his rights to tell them to turn the music down and if he was threatened in some way, to even shoot them
if they prove that he was threatened (and in FL it's not hard to do that) then he'll end up with a 3-4 year suspended sentence for leaving the scene and lawyer's fees
that's it. he could have very well been within his right to do everything but leave as far as FL laws go. in my state he would be in some shit, but i'm not in FL