One of the university’s oldest and most festive traditions, Celebrate UCI will feature games and kiddie rides, academic information, a classic car show, tram tours, the Wayzgoose festival and more. Housing, admissions, financial aid and other offices will be open to the public. 10 a.m.-5 p.m. Saturday, April 18. Aldrich Park. Free admission and complimentary parking. More: http://www.celebrate.uci.edu/.