The noisiest places I have been with my hearing aids;
1. My Subaru Forester at 65mph in a thunderstorm, volume down 2 notches
2. The laminate flooring factory in Temple TX. HA's off and ears plugs in
3. Most Restaurants, I'd rather eat in the car or preferably at home!
Link to article in Wall Street Journal on noisy resturaunts
WSJ Noisy Restaurants