Thank you all for the great suggestions!
Going with the sports drinks. We do have a tent type canopy that we use when we run Karaoke shows, but I'm only planning on playing for an hour so don't really want to set it up - may change my mind on that. Luckily there are lots of tall trees so I can get into the shade. We also sing in public a lot, so I'll stick with my singing in public attitude and try that while playing the accordion.
practice - I just plan to run through the playlist, make sure songs are in the correct order and make sure all the songs are perfect - if not perfect today they will be scratched off the list.
There will be about 100 people there from infants to elderly, mostly of Italian descent. Should be a fun time.
Playlist to choose from, not in any particular order, these are just some of my favorites: Beer Barrel Polka, The Chicken Dance, Five Foot Two Eyes of Blue, Iko Iko, El Paso, It's a Small World, La Vie En Rose, Wooden Heart, That's Amore, Ma Come Balli Bene Bella Bimba, C'e La Luna Nezzo Mare, O Sole Mia, Mamma, El Cumbanchero, O Sole Mia, Cielito Lindo, Too Fat Polka, Apples Peaches Pumpkin Pie Polka, Norwegian Wood, Que Sera Sera, It's Now or Never, Tijuana Taxi, Those Were the Days, Never on Sunday, Georgy Girl, Raindrops Keep Falling on My Head, Spinning Wheel, Spanish Eyes, Tequilla, Sunrise Sunset, Love Story, Speak Softy Love, Happy Wanderer, La Cucaracha, Flintstones, Over the Waves.
I have a lot more to choose from, in case of requests, but this gives me a good well rounded list to choose from for everyone's enjoyment.
Thank you all for the suggestions. All of them are good!
brandy