Have been to Blue Grotto in Capri with the waiting, the exhaust from other boats. Worth going?
We saw the blue cave in Bisevo, near the island of Vis. It was early September, we were in the only boat, and it was spectacular. It is absolutely worth doing — choose a sunny day for the trip.
What month? Are you staying on Vis, or traveling from ____?
Staying on Vis for 3 nights Sept 9-13 window. Coming from Korcula.
Also thinking about catching a tour via Hvar that would loop in the caves and let us disembark in Vis.
If you are going to be there, then I'd go for it. (I would not make the long boat journey from another island for it.) Vis is probably my favorite island, though that's a tough decision--enjoy!
FWIW, we cheerfully skipped the Capri grotto based on having see the grotto in Croatia. Small boat transfer from 24 cabin Croatia cruise.