Stayed at Block Island last summer in the only spot we could find to anchor. We were next to a power boat that ran the generator all night -- perhaps to power their underwater lights. A/C was certainly not needed.
It was bad with the noise, but we all managed to sleep anyway.
By the way, they were the only boat out of hundreds that ran a generator (that I could tell). And they were not upwind.
Great minds discuss ideas;
Average minds discuss events;
Small minds discuss people.
The best minds discuss sailing.