I have an auction house where the crowd is seated, and we deliver the items too them. Of course, a good number of the people choose to stand up in the aisle ways where we have to walk to deliver. You can part people, and as soon as you’re past, they close up the hole. Because of the noise, they can never hear you saying “Excuse ME” if you’re behind them unless you scream it obnoxiously. Finally, my solution has been to walk up behind them and say “Meep Meep!” loud and fast. They seem to get a kick out of it and I get through!
Certainly better than, “Fucking move will ya!?!” @cookieman! albeit not as satifying.
You might want to go with, “EXCUSE YOU!” next time, @Adirondackwannabe, lol