qt101, first of all, get it out of your head that “good” seminary = shidduch. Many many people who don’t go to seminary get shidduchim, and many who do go, unfortunately, don’t get shidduchim. Do what you can but your life does not hinge on this one year. Relax!
No interviewer asks the same questions to everyone. You and your friends will compare afterwards and see that they are all different. Some seminaries will have two or three meforshim preprinted for the girls to read, but not Rabbi Geisler. He picks and you read from a Chumash. He may grill you for half an hour, and he may ask you nothing. See my above post for a general idea of the types of questions he’ll probably ask, but you never know.
As for pros and cons, it’s been many years since I went, and I hear that there have been lots of changes. New aim habayit (is that true, anyone?), a few different teachers, and apparently Mrs. Tarshish opened her own seminary, so I’m sure her classes (which were my favorite, incidentally) have been reduced drastically. The medrash report (if it still exists?) was hard but worth it. The classes were (mostly) great. The seminary is a big one if you’re not comfortable with that, and one big con is that you are in two dorm buildings, so you may be separated from your friends. But overall it was a great experience – keep in mind, though, that every year is different and it is, to a large extent, what you make it.
Good luck!