You said a mouthful D,
To close that ramp for a local festival is a poor decision.
It sure seems that a change in the festival layout could accommodate all involved.
Like anything else, the only way to effect change is to get involved.
My advice would be to hit a local Puget Sound Anglers chapter meeting and ask the group to write a letter to the festival committee.
It's too late for this year obviously but with next years humpy run it would be an even bigger fishing weekend!