meals
Food plays an important part in Spanish family life, with lunch (la comida) the biggest meal of the day, often lasting from 2 to 4pm. It’s common for shops and whole villages to come to a standstill for the afternoon meal and siesta, especially in more out-of-the-way places.
Evening meals, which often start as late as 10pm, are usually preceded by a leisurely stroll, or paseo, when you may take in an aperitif in a bar.
language
One of the best ways to avoid being an Ugly American is to learn a little of the local language. You need not strive for fluency; even just mastering a few basic words and terms is bound to make chatting with the locals more rewarding.
Although many Spanish business people speak English, it is a good idea for foreigners to have all of your materials printed in Spanish.
…
