Earplugs are recommended for any event like this, indoors or out. Concerts, too.
They cost pennies, weigh nothing and is is better to have and not need them than the other way around.
I'm not an
, either. I like to retain my hearing so I can enjoy the subtleties of music for as long as I can. I even wear plugs when I play my drums (or noise canceling headphones)
I like it just as loud as Eddie Van Halen. "Loud enough to makes the hair on my arms move"