Being on time
It’s a well known fact that the Spanish are hardly ever on time. Arriving early just doesn’t happen, whereas 10 or 15 minutes late is the norm. Once you live in Spain it’s very easy to fall into this custom, which sometimes takes the pressure off and when you find yourself keeping your fellow countrymen waiting you know you’re beginning to settle in Spain!
Something to remember is that customs and culture are different in Spain, and getting angry with a Spanish person because they’re late will get you nowhere.