Used the shuttle bus 3 euro return then the red hop on off bus 23 euro's covered both routes red and green went on the cable car mount juristic fabulous views of Barcelona.
Booked this on board ship Ibiza Town visited sea salt salines a church then San Antonio and Dalt Villa and church all seemed hurried even though it was 4 hours get off in Ibiza town by shuttle bus stop if you want or stay on and go back to ship.
Walked to the cable car then got an all in one way ticket to the top cover most of the attractions walking down visited the nature reserve st michael's caves the tunnels and Moorish castle hard going on a hot day so a couple of drinks and fish and chips back in the centre