Lovely 12 hole course with a variety of shot types to make. From long wide open bombers to tight squeezes under the canopy, Quilchena is a decent challenge in a beautiful setting.
Fantastic concrete tee pads.
Baskets all are in good shape.
Bathrooms.

As others have mentioned, this is a popular park for locals, and many don't pay much attention to people playing the course. Be prepared to wait or ask people to look out for your shots.
No map.
No practice baskets.

This course doesn't seem to have many players the times I have been there. For such a beautiful park and such a large course, its nice that its not full all the time. This makes asking or waiting walkers/runners/dog-walkers not so bad, as this is the only slowing down you will likely have to deal with.
A lot of the course has wide open areas, so sunscreen is not a bad idea as you will get plenty of it here.
The course is fairly intuitive. The only two holes that might seem harder to find are #6 (which you walk between the buildings to get to) and #10 (after you finish 9, keep walking along the bush line, the pad is between the berry bushes and a tree, it's easy to spot once you know where to look).