And for Cadiz.. if that is a port for only a day ( then ) you can get off ship and walk for about 5 minutes ( or grab taxi) and go into the BEST shopping village of all of Spain. shoes, purses ( leather jackets).. all fabulous designer stuff so wonderful.
If you want to grab taxi ( get up early- they are there at the dock, and they have a blackboard ( I loved that) with prices posted for all their tours.. we had set up a driver to pick us up ( and of 30 + cruises was the only guy who never showed in time( although he did show up a few hours late - after we grabbed taxi - after 1 hour wait -and left a note for us that he had been caught in traffic ( hello?.. so a tip.. DO NOT PAY ANYONE in advance of your trip!).. first and last time I gave a "guide/ driver" a deposit..
another story..
anyways.. Cadiz is so cute you certainly can do it on your own.. if you grab a taxi at the dock for about 15 Euro they will drive you to the village and give a quickie tour - not neccesary unless you can't walk a few blocks).. if you have the whole day to go to Seville, wake up VERY early and ask for FERNADo.. he is a young man - speaks perfect English a doll ( probably if you
ask for him they will all be Fernando

.. but ..
in any event a taxi will hold 4 comfortably , and take you to all the sights of Seville.. ( on your own..they park right in the center and that is easy..
if you like fabulous lunch try LA Raza ..the most fabulous seafood for lunch..
;_) getting hungry
and for Lisbon
http://www.sunnytours-pt.com/ have fun Tom..