I visited in early May and the gardens were not formally opened at this time; however, the tulips were in bloom and many of the flowering trees and shrubs were in full bloom as well. The 1st day I visited parked across the street (ample parking) at the Olympic center. Visited early morning and walked across the street. Some work was in progress at entrance. Asked about entrance fee and was told not open yet and to go ahead on in if I wanted to. Spent 1/2 day walking around. The Chinese and Japanese gardens were glorious - azaleas, flowering trees, etc., were just blooming - lots of photo ops even though not ready for prime time. Other theme gardens were getting prepped by employees, but many photo ops. Got caught in the rain and had to leave, but returned next day and toured the rest of the gardens including the arboretum. Very big, lots of places to stop and rest and just soak it all in. Wonderful energy from employees and very relaxing atmosphere - the ponds and small lagoons all had places to sit and enjoy both flora and fauna. The tulip displays throughout the gardens were magnificent, and I was fortunate to be there just as they had peaked. Although I didn't have to pay to get in, I would gladly have paid the entrance fee even if it wasn't yet ready. If you like botanical gardens, don't miss this one.