Yes on the flashers first hand
From the personal diary: I parked in South Beach one night and totally blocked one of two lanes (going in the same direction) thereby blocking an lane of traffic. I was too messed up to attempt to find a more suitable spot so I just posted it there and hit the bed. I got up to take a whiz a few times and looked out the window to see a complete and total mess of traffic I was contributing too. I had the flashers on (like any responsible drunk would do) making a complete traffic jam. South Beach traffic on a Saturday night is bad enough without me blocking a lane of traffic. But there I was getting my beauty rest.
Bottom line, the flashers were still going along about 10am when I regained consciousness (that's another word for waking up). They were weak, but flashing. I turned on the gen, turned on the 24 amp chassis battery charger and the bus started after 15 minutes of charging.
Not one cop knocked on the door to see what was up. Not one drunk walking by banged on the bus. Not one beer bottle thrown at the bus (that I know of). Never had a problem in NY either. Maybe I do things that are just so out of line that it escapes the radar of a normal rational thought of "What the heck is that thing doing there?". I was parked in front of a Lowes hotel in Miami so they must have thought I was waiting for a group or something. I've posted other things like this about New York that goes to show you can really get away with a lot more in our buses than a regular RV. I got off track a little bit I guess. I regress.
I didn't have the generator and the 24 charger on and the chassis batteries let the lights flash all night. If you needed A/C, leave the charger on I guess. The lights were pretty weak in the AM but still kicking. I presume that on board charger doesn't cook the batteries and throttles back automatically if the batteries are charged since I've accidentally left it on in my yard hooked up to shore power for two months before and my chassis batteries are still ok.