Waimanalo Lagoon Freedom Camping Site
Here is a freedom Campsite for up to 4 self contained vehicles.
There is a wheelchair accessible toilet nearby (see other comment), where there is also a water tap available for campers.
No power is available for campers.

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Attached photo(s):
https://westnordost.de/p/232756.jpg

Here is a bench, made from wood

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Attached photo(s):
https://westnordost.de/p/232758.jpg

Here is a bench, made from wood.

via StreetComplete 58.2

Attached photo(s):
https://westnordost.de/p/232757.jpg

Unable to answer "What’s the topic of this information board?" – Freedom Camping Information (Information Board) – node/4565604494 via StreetComplete 58.2:

Information on Freedom Camping and Day Parking along the beach

Attached photo(s):
https://westnordost.de/p/231128.jpg