I wrote a guide to Discovery Park for The Seattle Times. Burning questions answered:
Yes, the park restrooms are open. But not the restrooms in the visitors center (the ones closest to the playground).
No, the visitors center will not open this summer. It will stay closed through Feb. 2022. In the fall, the parking lot and area around the visitors center will also close for renovation.
No, there's no way to get a parking pass for the beach. No, there won't be a shuttle to the beach this summer.