The second half of my "double" today was an outdoor wedding reception, around the pool and a country club.
If you're not from the South U.S., you may not consider some of the unique problems. The mosquitos were awful for about an hour after dark. The humidity is around 90 percent. I wore shorts and a Hawaiian shirt, since it was a Luau.
In case anyone is interested, I used 2 JBL Eon Power 15's for the mains, plus a Power 10 for monitor.
My house is close to a mile away, and they could hear the music easily from there, but up close it wasn't too loud because the sound dissipates so quickly. It IS fun to play loud sometimes!
DonM