1) I spent the first few weeks of last semester at school from 0730 am to 830pm. I can't truly say I spent every second studying but I did avoid to a great degree socializing for long periods. This was hard as there was some pressure to fit into a "group" - something similar to what I felt some 15 years ago in high school, with some of the clique factor thrown in there. It wasn't until the last month of the semester that I setled into a study group. I reccomend waiting till at least the first month or so to see if a study group others any benefits.
2) Yes, but that time was spent with my family rather than any law school friends. If you don't have family then I can see how NOT being part of a group could make your life "lonely." The prospective, from outsiders, was important to the degree that it helped me chill out on a daily basis.
3) Here is where I feel duped. Yes, as others have said it was intense when we had a paper due. At St Thomas we have the twist of having midterms which add strees a month into law school. You don't see the fruits of the stress until finals period come. Midterms give you some confidence, the best benefit being that you have an actual understanding of what you professor's expectations are answer wise. Plus, since they were worth anywhere from 10-30 percent of our grade they reduce some of the stress of finals period. The reason why i feel duped is that, despite all that you may hear in this forum and elsewhere, law school just isn't as "crazy" as people have made it out to be. If you strike a balance between your pursuits and understand that law school is just one of them, you simply should be fine in this regard.