It's free. Just tip your valet.
Free
Free just tip valet
It is free of charge.
I had an event here. I was never asked to pay for valet and none of my guests mentioned a fee, and believe me they would've!! Hahaha... So I'm pretty sure it's free. You can give a quick call if you are truly worried. They're quick to pick up and to give info at the front desk.
...I didn't use it, it was optional.
Thanks! Your answer is awaiting moderation.