We are now at the Sand Dunes which are part of the Sanin Kaigan National Park.
https://www.japan-guide.com/e/e8102.html
After sitting for a few hours and a hearty lunch, many students are eager to run around and enjoy the sand dunes firsthand. As this is a national park, the children cannot draw in the sand! Of course, we cannot even think of making a sandcastle! Rules are rules.