No interesting experiences here. My water broke with both of my labors (before it started). DS1 happened around 3:30 in the morning after getting up and going to the loo. His was just more a trickle though and TBH (at first) i wasn't sure if it was more pee or if it was my waters, but i didn't take long to figure it out. I hoped in the shower and still had some coming out. Then once i got out i used a heavy absorbancy pad and that did the trick for a bit. Never leaked through my shorts or anything.
With DS2 my water broke (a HUGE gush like cinema style!) but it was around 7:30 in the morning and it happened right as i rolled over in bed. ...that was super messy! The pad wasn't much use for a while.
The *majority* of women who experiences PROM have it happen while they are relaxed, so it typically happens in the night/waking up/sleeping, etc. Melatonin is one very contributing factor with labor so when you are sleeping or super relaxed thats when it tends to happen. With that said, it *CAN* happen in public...in which case it would probably be pretty emabrassing, for sure. But i dont think it's super common (plus only like 10% of waters break before hand anyways).
But if it does happen, i think ppl would understand bc a full term belly is pretty obvious. I think most would be more excited than anything. I also think how YOU handle yourself after (And if) it happens will influences other's behavior and attitude more than the fact that you have a wet spot on your crotch. If you hold yourself high, or joke about it or dont make a big deal, then chances are others wont really think much into it. But if you make a big deal, freak out in front of everyone, draw even more attention to yourself, then i guess it could get pretty emabrassing.