Went on the aquarium tour 34 euros per person. Very well organised including a boat shuttle to to dock where the aquarium is located. Not a long tour half a day giving you the chance to look around the harbour.
Plenty of excursions available at the dock but the cruise excursions coaches etc are all ready and waiting for you upon your arrival. We left the ship and opted to walk around Naples as had been before and knew where to go into the town.
Did our own thing in Palma got off the ship and did not pay for the shuttle bus just walked along the bridge to the taxi rank. Got a taxi for 14 euros to a private beach and restaurant and had a fab day at the beach.