Bump into my ex

There's this event me and my parents want to go to (it's a car event at a local racetrack). Anyway my ex used to go to these events quite a bit. However as far as I'm still aware he works Saturdays which is when this show takes place so I'm hoping not to bump into him. But there's also a part of me that's really worried I'll see him there, I don't wanna see him at all and it's putting me off going slightly and I fear it'll put me on edge the entire time I'm there but at the same time I really wanna be going to these events because I love cars as well and feel I shouldn't have to hide away just cause my ex might be there. Idk what to do. It's a massive event so hopefully even if he does attend I wouldn't see him. Or maybe I should just wear a disguise😓😂🤷🏻‍♀️