April 21st (Easter Monday), however, is considered a regular working day, so the stores in Marbella should all be open and working under their regular operating hours.
El Corte Ingles shopping center is open on April 13 and 17 and 18 from 10:00-22:00 but Hipercor is open from 9:00-22:00. La Cañada commercial center always follows the same schedule. So if you need to get some shopping done you can certainly go to these places.