Lots of things to remember, but it's best if you read a book (like Super System...).
Most tourney's don't have smoking allowed at the tables.
You might wanna learn some Spanish, it always helps to know what you're saying.
Don't get intimidated, stay on your normal game. The only difference is that the stakes are significantly higher, and that does in a lot of people. Get used to the amounts that they're betting
Brush up your own poker skills. You did win this satelite, but the people you gotta watch out for do this for a living. They're gonna do some crazy stuff (particularly if you last long enough to finish with a cash prize. You need to bring your A game.
Ask your friends to help you get rid of tells. If they won't, get new friends.
Realize that the biggest thing at these tourneys isn't necessarily the tourney itself. There are a lot of side games that filled with people who've already been bumped off, or people who got bored of watching.
Btw, don't drink. At least, don't drink in excess. There's a pro who gets good when he drinks, but when he gets drunk, he's useless. And since it's hard to stop once you've had a few, don't do it. Bring a friend instead. Moral support helps. (not to mention you're in Spain).
There's a lot of other things, but I don't know 'em.