In July 2012, a new disembarkation tax was instituted for visitors to the Italian islands of Capri and Ischia (known for its thermal spas), two popular day trips from the Amalfi Coast or Naples. The hotel tax that was previously charged has been cancelled so as not to penalize visitors who spend the night. Instead all non-residents arriving on the two islands are now charged a 1.50 euro tax, collected by the ferry and hydrofoil companies. The tax also applies on the nearby island of Procida as well as the Aeolian Islands of Sicily. Some Tuscan islands charge a 1 euro tax.
Travel Guides: Capri | Ischia
Photos: Capri | Ischia
Ischia photo © by Francesca DiMeglio, used by permission

This is interesting. For people who spend time in the island hotels is this fee less than the hotel tax used to be? Just curious. When I went to Capri for the day it was very hot and I rode up in the funicular with a group of very smelly Spanish college kids and think they should have paid me!
That would depend on how many stars the hotel is and how many nights you stayed as the hotel tax was per night, based on number of stars.