Does it cover Park Güell and Sagrada Família timing?
Yes — they sit on different days on purpose (Sagrada Família on day two, Park Güell on day three); always confirm ticket rules on official sites before visiting.
Is the beach mandatory?
No — you can keep three days urban; the guide simply leaves clean space for seaside air when it suits your dates.
Will I need a car?
Not for this city itinerary — metro, walks and occasional taxi cover the route in this guide.