Welcome to KIDSFEST San Diego - a Celebration of the Imagination ! KidsFest is San Diego's premiere family event with over 100,000 sq. ft. of unique creative and interactive activities for kids. Come join us for this annual weekend (June 9 & 10) of building, creating, painting, music, dancing, and much, much more. Kids love it! Ticket prices are ALL-INCLUSIVE -- that means everything inside KidsFest is included and guaranteed to be fun. less