When it comes to protecting your mirrorless camera equipment during an event, the best way to do so is by weatherproofing.
Invest in a weatherproof bag to store your camera and lens choices, as well as any additional accessories you may need. Make sure that the bag is large enough to fit all of your equipment and has special compartments for extra items.
Additionally, consider purchasing a few lens hoods or rain covers for extra protection from the elements.
To ensure your kit stays safe and secure no matter what conditions you're shooting in, think about investing in some quality weatherproofing gear.