My friend and I are planning a 10 day trip to Spain (Mar 22 to Mar 31). We realized after booking our flights, that Spain is a very religious country and we might have issues with museums/tourist attractions being closed. This will be our first time in Spain and we'd like to see as much as possible. We are flying in and out of Madrid, and Barcelona is a must for us. In addition, We'd like to see San Sebastian, Sevilla, Granada and Cordoba... Are there any suggestions for an itinerary taking our dates into consideration?