Later this year I'm being hauled onto a cruise, so do any of you have cunning advice for day trips to: Lisbon, Gibraltar. Barcelona, Ibiza, Cartagena and Cádiz?
I'm hoping to find some things away from the hordes, so any historic hideaways, gems of local interest or good guided tours... I'm hoping that if I start to get ideas now, I can plan around the rest of the extended family with greater ease, so any advice?