Sad to hear, as this park has had historically good reviews. Hope you have posted your review on rvparkreviews too, especially since you checked there ahead of time.
FYI, coastal Washington has been in a drought situation (worse than Idaho's) so that may account for the "mud puddle."
2020 Toyota Tundra CrewMax 5.7L V8 w/ tow pkg, Equal-i-zer
2020 Lance 2375