Currently the additional donation is on the first step of the registration form where you select your reg option. That's fine, totally works. There should also be the ability to add a donation "upsell" right before you enter your payment info. Let's give folks an extra opportunity to give, hit a fundraising milestone, and make a difference!

Also, when people register multiple family members, it's clunky to not have a donation option right before the checkout where you see how much you are going to pay.

Could even function as an incentive to earn a special badge, like how you get sold to round up for charity at the grocery store.