Sunnyland is a great place to visit while in Palm Springs area. Beautiful grounds and the visitor center is an architectural wonder. Best of all it is free.
Ordering tickets is through their website, so plan ahead. Tickets seem to be in limited supply and you can tour only on certain days and months.
We stayed at the visitor site and surrounding area for about 1.5 hrs on a tour day and we never saw any evidence of the tour. No one with tickets, no public announcements, no one leaving or arriving from a tour , no place to line up etc. So it is sort of odd ... like arriving at a train station with no visible train tracks. Anyway do go ,even if you can not take the tour.