Thank you for your help. It doesn't look like a far walk but with the rain like it's been. So i should just ask someone at the bart station about shuttle service?

I've been shuttled over to BART station by the hotel. They just need lead time. In emergency, it's a pretty short walk.

Ask the front desk, usually they can figure somthing out

5-10 min walk. With rain or evening take uber or taxi.

Uber will cost you about $6-$7. The taxi cabs lined up outside the WC Bart Station will get you for about $10. The Marriott is close to the WC Bart Station.

Call the hotel...ext.1111