We spent a week there last year. Seattle is not RV friendly and this is one of the examples. While the people there seemed pleasant (we were gone early in the morning and returned late at night), there are a lot of long timers in residence. The real problem is the spaces are very tight together. We have a two-slide model trailer and we had to move over 6" (after we had setup of course) so the neighbor on the left could open their door. The power pole and sewer connection for the right hand neighbor was right at the bottom of our steps (rear door 2955 model) so you had to be very careful when leaving. The green stool in the picture below is because the site sloped a bunch (note orange blocks under the right tires) and we needed the stool to reach the bottom step. Forget about opening your awning. The park worked for the purpose of our trip, but it isn't a place I would use again.
Google Earth has a good picture of the park if you haven't seen it. We were parked in the vacant spot just above the “A in a balloon” icon. The outer spots on the left and bottom are under trees and not as visible.
Hopefully as manager of the facility, you will get a better site than we did.