Need Advice: Choir Tour vs. Science Fair

First off, thanks for reading!
The choir that I am in is touring Canada in April. We’ll be singing in the Notre Dame Basilica. This is obviously a super cool opportunity for someone like me, so I signed up. However, unbeknownst to me, the state science fair is on the same day that we leave for Canada. I have worked really hard on my research this year, and the chances that I will qualify for the state fair are very high: I have qualified for the past two years and this my research this year is my best research to date imo. I’m very torn. I really need advice. Thanks!