I’ll bet it’s quite a sight when they’re all there. And quite a ruckus!
If it’s a no-no, it appears none of your neighbors are tattling. No way they don’t know the ducks are showing up. :-)
The creek runs through a couple or three or four neighborhoods, so I’m betting that they are dining in more than one place. I know they are not here all day just from watching on the weekends. But they do know the sound of the garage door and when I turn the kitchen light on they know for sure that I am there and make it known LOUDLY that they are hungry.