We got the Chihuly / Space Needle combo ticket. There is a little cafe in the Chihuly. We got some french fries and root beer float. The indoor area is not lit well for pictures of people with the art, which is fine, but just a note because the people using flash were wildly disappointed unless they had a dslr. The outdoor garden was awesome. catching reflections of the space needle off the glass.
There really aren't that many sculptures but the ones that are there are pretty great. What's really nice is that there are chairs all over the place. It was hot while we were there, so we just sat and looked across the sound for a while.
This place is awesome and totally worth the visit. We got there around sunset and it was great.