UCLA had sent us a comprehensive schedule ahead of time listing various events and presentations and we could create one that met our needs. The information fair was spread out all over campus with booths for every department, financial aid, academic advising, alumni association, etc. Campus tours, and housing tours were available through the day.
Student volunteers were everywhere guiding us and offering help.
We got there at 8 AM, and left a little after 1 PM, before the rain started. We attended the University Welcome, Freshman New Student Presentation, Summer Sessions and the department presentations specific to us. We had already done a campus and housing tour earlier in the month. If you know what you want to do and plan ahead, it will be a productive day.