Board a traditional wood boat for a conventional caldera tour, discontinue for swims, consult with the volcano
https://cristiannmqa647.wordcanopy.com/posts/santorini-vip-tours-vs.-santorini-luxury-tours-what-s-the-difference
Board a usual wooden boat for a traditional caldera excursion, end for swims, go to the volcano, and have fun with onboard experiences and snacks.