You're not here for fun...
but see the list.
Any given night:
See the google map for a few bars. They range from 'LA hip' to mellow and down to earth.
Thursday night:
"Hotspots" US premier at SB Natural History Museum see link for details and directions.
NPR's "Wait wait, don't tell me" at the Granada Theatre. Maybe sold out, but check Craigslist for tix.
Spring is the tail end of Santa Barbara's surf season so there's a chance you could luck out if you want to get in the water. From your hotel it is possible to rent a board and wetsuit (try the Beach House) and walk to Leadbetter. The point will work on reasonable swells and is super mellow. See the google map.
Volleyball and frisbee on west beach near the harbor.
There are many movie theaters on state street, including one across from NCEAS. No matinee break out groups though...