It's time to sign up for free summer bowling! Sign up at Kids Bowl Free, and your kids can bowl two games a day (per kid - including I think, free shoe rental) for the summer. If you think you'll be bowling as well, purchase the family pass starting at $24.95 and you'll get two games per adult per day (up to 4 adults) as well.
The Bay Area locations include Daly City, San Mateo and South San Francisco.
We did this last summer. You sign up for one bowling alley only. After signing up, you'll get an email a week with your bowling coupons (or you can log in and print them). That's it!