Jazzy, you are definitely not alone in your love of Alice and Jazz. I thought would offer a few opinions on your questions.
1) I think with something so important as finding her soul mate, she would let events take their course as they were supposed to. While I think she might have tried to find a sooner time to find Jasper, particularly because I think she would have seen he was in pain, struggling, and wanted to help him, I think she would understand that there were things that had to happen first, before the time was right for them to meet and him to be ready to go with her. I get what you are saying, EclipseRox, about her moving things forward. I remember the PC where she talked about it. But, I think Alice sees and understands the difference between wanting to befriend Bella and meeting her soul mate. While she was anxious to meet Jasper, I think she knew that that was something that had to take its' course.
2) I, too, think they waited for a time when it could be more of a celebration. While I don't think they wanted a huge, lavish, Rose-&-Emmetish wedding, I think they would have wanted their family there. And, while I completely agree that Jazz is a traditional gentleman, I think the way he had lived for the previous 85 years or so might have changed his perspective just a little. He and Alice were soul mates. There wasn't a committment greater than that. So, I think they wouldn't have seen a need for a wedding until they had family with which to celebrate it. And, Edward himself tells us that the family was present at the wedding. I don't have my books in front of me at the moment to find the quote, but I think it is in Twilight, the same place he says that they will all have to go to Rose and Em's next wedding in a few years.
3) I haven't ever seen any reference as to where the Cullens were living when Alice and Jazz showed up, just the hilarity that ensued. It is actually one of my favorite passages in Eclipse. The closest reference we have is that they were living in Appalicia in 1935, when Emmett was turned and joined the family. Obviously, they would have moved on somewhere else, probably several somewhere elses in the intervening 15 years. We know that they lived in a house with a good view, and that hunting options were fairly nearby. I like Canada as an option, though. Somewhere in the wilderness where they can be a bit more inconspicuous. Plus, I always got the feeling from the way Edward describes them showing up that they were somewhere a little more remote, thus making their appearance just that little bit more surprising.





