Yes there is another way out which puts you near little shop. May want to go thru museum area first before go to tunnels as you can leave if want when done with tunnels

Yes although keep in mind there is lighting in the tunnels so may need to adjust, plus there is some area which do not have lighting which will need flash.

Hi Alex, If you get a taxi to the Navy Underground HQ, it should be no problem getting a taxi back; the helpful staff at the exit volunteered to phone for a cab for me (no charge and the taxi driver doesn't start the clock until you get in). I would recommend that you take the taxi from the underground HQ to the lesser known "Kateramui Old Military Base" in Tabaru Park (near Oruku Monorail Station). Send the taxi away and spend 1/2-hour exploring the hill, finding the various tunnel entrances (not open to the public) then take the monorail from nearby Oruku Station to the end of the line at Shuri (a more economical means of transport compared to expensive taxis). At Shuri head straight to the "Tam-u-dun Mausoleum" (you will not be disappointed) then see if you can find the entrance to the "Former 32nd Army HQ" before heading up towards the Castle. If you look up these attractions on Trip Advisor in advance, you should have no problem locating them on your phones' GPS.

Hi I have a rough idea it was under 2000 yen. There are probably other options to get to the site but as we were on a cruise this was the quickest way to see several sites. hope this helps. peter

500 Yen adults, 250 Yen Students