The closest I have come to caching on a island is Doty Island in Neenah-Menasha. It does have its own culture and climate, but it is nothing like true Island life. Congrats on a milestone with memories!
I Zee and Zaw the Zeeman_Clan reaches 4,000 Finds on Mackinaw Island. AwZome!
Congrats to the couple that got us started in this crazy thing we love to call geocaching. So happy we were together on the Tranquil Bluff on Mackinac Island to commemorate your achievement. Cheers to many more milestones!
I went to the woods because I wished to live deliberately, to front only the essential facts of life, and see if I could not learn what it had to teach, and not, when I came to die, discover that I had not lived.