Hi Carl
Sounds like Todd is a Liberal. You would be volunteering in the USA (encouraged not enough volunteers) the fact that you are 75 you are retired and would be volunteering at a non profit dance or gathering. There is no problem with that…good for you! god bless! This unit would be perfect for your crowd assuming your not going blast your crowds eardrums out…you just want some music. This unit has a wireless mic, 12″ speaker and mixer built in..the best pat is it has wheels and a handle like a rolling luggage for easy transport. Check prices in US first they may be cheaper even with exchange. If you bought it there on your winter vacay …well within duty allowance for your length of stay. Would be no problem taking down either…personal listening.
good luck!
https://www.long-mcquade.com/77376/Pro-Audio—Recording/PA-Speaker-Cabinets/Alto/Transport-12-400W-Battery-Powered-Portable-PA-System-with-Wireless-Microphone-and-USB-Media-Player.htm