Received this from the Costa del Sol Tourist Office, which gives some of the local holidays, although more for Malaga than Casares, but it may help with the trip planning!
Dear Candice:
Thank you for your explanation, you are very kind, our holidays in Spain are Christmas day 25 december, 1 january, in the Holi week is Thursday and Friday but the date changes every year usually is the last week of march or the first in April, Día de la Constitución 6 december, Inmaculada Day 8 december, Andalucia’s day 28 February, 1may day of the workers, in Málaga 8 August Victoria’s Virgin day, 15 August, National 12 October Pilar’s Virgin day, and 1 November .
I hope it will be usefull for you.
Best regards
Ana Vera
Costa del Sol Contact Center