Chambermaster S.A.I. Entertainment Share: S.A.I. Entertainment 551 Fredricks Ave Apartment 266 Oceanside, CA 92058 760-607-9548 About Map About S.A.I. Entertainment is an up and coming entertainment company posed to become San Diego's premiere entertainment company for corporate, military, festival, nightlife, and private events. What's Nearby? Distance: 5 10 15 20 25 50 mi.