On the tourist caches are taking you to locations on the island that are or were places for tourists to go to.
Easily done on bus routes, by car or bike
Some of the attractions are free to enter, others have an entrance fee to pay but no payment is required to locate the caches. Also some locations are only open seasonally but the caches are available 24/7.
All caches require great stealth as in a busy area, and please replace caches as found so there is less chance of them being muggled.Feedback suggests that you may have to widen your search area due to different readings of co ords, but using the clue you can narrow it down. Please bring a pen with you.