Top 5 on Kauai
This campground features both male / female bathrooms and has two outdoor showers available. The showers are "cold", which in Hawaii, means room temperature, so after the initial shock, it actually becomes quite comfortable. I do not recall if there were picnic tables, but at the most maybe one or two. It does require a permit, but those are easy and cheap (~$3). I elected to post up under the tree section, which provided a good cover, flat ground and actually had a downed tree that I used to set up backpacking stove for coffee in the morning. There were a few small fires on the beach throughout the stay, but I don't believe it is technically legal to do so. Overall, my favorite place to stay in Kauai with the given options due to the recent storms and North Shore closures.