You should RSVP by July 31, 2019. We sent electronic invitations that allow you to RSVP to each day's events separately and add the events to your calendar. If you did not receive a link please let us know.
If you are planning on staying at the Rancho Bernardo Inn you should reserve a room by July 31, 2019. Summertime is quite popular in California so we suggest you book as early as possible.