One day
The tunnels or Himeyuri can come first. Leave enough time at Mabuni. If the children are done walking, do not add a cave.
This day does not add shopping
The museum and the Cornerstone of Peace take time. Keep the tone low, and do not pose on the stones. Do not add Senagajima or an outlet at the exit. The former navy tunnels are on Naha’s south side — the same theme, not an appetiser for a beach.