The nearest international airport to Cadiz is Jerez, where flights via Madrid arrive. Easiest access from Ireland is to fly to Malaga and drive down the Costa del Sol to Cadiz. High point of the calendar in Cadiz is the Samana Santa, the carnival for Lent which ended last week. Footprint Guides has recently published a handbook to Andalucia with everything you need to know about the region, available from good bookshops.