Spain is all about politeness that does not always serve you. It is tougher than you think to figure out what that Spanish smile means, and they do smile a lot! How to get about it? You keep on asking them until they lose patience & are ready to tell you the truth. Now, you win.
Never push a Spanish. They hate it so much, they may leave the deal just because you pushed it. Even if they really like it! If you want to succeed in the Spanish market, you must let the Spanish set the pace. Let them lead you or you lose.