HELP!! Gender Reveal Party Question

Je
I am having a gender reveal party in two weeks. I am having my ultrasound this Wednesday and haven't decided whether we are going to find out the gender ahead of everyone or at the time of the party (a whole 10 days of holding an envelope)! I need suggestions & advice on whether to find out or not. I know everyone's different!
ALSO...I don't want to do the typical balloon release, silly string or cake idea for the reveal and I need more ideas... did anyone do anything different or have a creative idea? I have a 7 year old daughter at my disposal to help reveal the gender lol!! Help...running out of time !!!