Regardless of where you stay, when you are at games on the UCSB campus and want to grab a quick bite nearby try Woody's BBQ; it is a fabulous little barbecue restaurant just south of campus on Hollister Ave. in the Magnolia Shopping Center. Sawdust on the floor, fantastic burgers and fries, tri-tip, chicken, and of course they have ribs, slaw, etc. Beats most of the other close by dining options.
You can get your Starbucks fix at Camino Real Marketplace, an upscale outdoor mall at Hollister Ave. near Storke;this is only 5 min from ballfield just north and out near the highway (US 101).
One other thing I'll mention is the parking at UCSB; they have a really interesting way of enforcing their pre-paid outdoor parking near the ballpark. You drive in and hopefully find a nearby space, park, and pull out your cell phone to pre-pay with a credit card for the amount of time you want to purchase. Right before your time expires, you'll get a text message asking if you want to add more time. Or you can do it the old-fashined way and pre-pay at a kiosk in the lot by feeding 5's and 1's into the machine, the amount determined by how long you think you will stay. You enter the space number you occupy into the machine, then the system relies on gps camera surveillance to determine if you overstay your time period. If you do, a parking enforcement officer is there within seconds to issue a ticket. Be sure to overpay, because if the game goes extra innings (as ours did) you cannot "add-on"; you have to start over by paying a higher rate for any additional time you need. Great use of technology, and the school is making a killing with parking revenue now.
Good luck...enjoy the tournament.