I'm taking the test on Friday, too!!! I'm soooo nervous! But you know what? My teacher gave us study sessions and everything with practice tests and the whole shabang.
With the multiple choice, there is a penalty. I forgot what it was, though, sorry. But you have to subtract that from your score. I will try to find out the equation for the final results, my teacher wrote it all over his chalkboards.
AP Euro is the main class that I did absolutely NOTHING in. Seriously, all of my friends, even my close friends, laugh at me when I say that I read a few pages-- that's how horrible I am.
But when I took the 2004 practice test, I ended up getting a FOUR on it!!!!
Like someone above state, you have to know the trends. You have to remember the big, main events and what centuries/years they happened in. You don't have to be precise, though, just KNOW it. And try to remember the after-effects. This can really help you. Also, if you have been reading any books lately about Protestant lifestyles (i.e.- The Crucible, Scarlet Letter, etc...) those can really help you understand the standards of the Protestants.
Religion was a pretty big thing in the 2004 test, well, I'm pretty sure. It was kind of like Jeoperdy where they give you all these little details and you have to answer it with, "What is ___." lol. It sounds silly, but that's how it is. If you know how to apply the details they provide you with in the question, you're well off to getting the answer. Apply it to literature, society, et cetera.
My teacher scheduled a seminar with one of the people who have been grading the AP European History exams for quite some time now. Don't be too nervous. They are actually quite lenient! He said that if you confuse the Louis's, but get it right with what they did and the time that they ruled correct for the question you're answering, they'll let that pass. Spelling errors are okay, as long as it's easy to understand what you're talking about.
Also, they totally understand the importance of time. He said that many times, they will be gracious with the points on the final FRQ. The reason why is because most people spend most of their time working hard on the first FRQ. Then when it comes to the second one, they will rush through it or often not even finish. The average score for the first FRQ (from what I heard) is around a five or six. And for the second, the average is a 2.5. But that shouldn't even bring you down! As long as you're a good writer (like you said you were), it should be okay.
Also, if you do badly on the selected response questions and do well on the essays, believe me, there is more than a possibility that you will pass. But do your best to do well on the multiple choice! The goal that you have to aim for on the multiple choice is a 50-60 in order to be confident to pass the rest of the test, even when you don't do too well on the essays.
I have read on many different AP test forums that for the AP Euro exam, the Houghton-Mifflin (I think) Western Civilization book is the best. And many have said that if you understand the content in the 7th edition one, you'll most likely pass. Because so much time has passed and the test is this week, I suggest you go on the website. If you need the links or anything, feel more than free to PM me! There are chapter outlines on the site, and they've been very helpful to me!
On the 2004 AP Euro test, there were like no questions about the Renaissance or the Middle Ages, but it would be quite helpful to still study them. But make sure you KNOW all of the revolutions that happened around 1848. I dunno why, but there seemed to be a lot of questions about society, such as the reason for the baby boom, lol.
Like stated in the Princeton book, there will never be any questions pertaining to military tactics/tools, but if there are, they will never be specific, such as, "What was created during the Age of Exploration? (List of different tools)" No.
I was very much relieved when taking the 2004 test to realize that this test is more broad. In my class, we had these chapter tests that were so hard, we had to know little, fine details, lol.
Don't worry, you will do perfectly fine! I have total confidence in you. I mean, if I can get a four, I know someone who has been working hard and studying as much as you can get at least a three!
Good luck!
anyway. 
