We used footpower to see Cadiz rather than go on an excursion. To my surprise Cadiz was pretty and mostly clean - though I involuntarily sidestepped into something undesirable and had to use a municipal fountain to clean a sandal.

My meagre knowledge of the romance languages was enough to guess when we bought some biscuits to take back that the shop assistant wanted forty odd euros. It's a work tradition to return from a break with something edible and ethnic.

Reportedly some of our ship got pickpocketed in Cadiz - I have no reason to think Cadiz any worse than London or even Cambridge (tourists are regarded as legitimate prey by some locals there).