Somewhere to read, work for an hour, charge a phone or sit outside, without having to buy anything. These are the places whose own pages say they're free to walk into, with the hours, seats, outlets and restrooms they list, and what they don't say.
Register first. Check registration details and availability with the organizer. Registration details
Follow Living Arts & Science Center in your calendar. The calendar carries its checked events for the next 60 days. It updates when your calendar app refreshes, so new dates, changes and cancellations reach you without another visit. Google Calendar can take a day or more. No account needed.