I saw this thread and though I'd ad my $ .02!
So far I've only had one semi bad experience with an SA in Louis Vuitton in GSP New Jersey. I wanted a new LV bag for Christmas and the previous year I was able to go into the store with my dads credit card info (minus the credit card), and buy the bag. My father would have much rather me do it without him than drag him to the store, yet I wasn't an authorized user on his card. If it was done over the phone, the merchandise was shipped to the credit card address so they were sure my dad was the one making the purchase. Not knowing the rules had changed less than one year later, I went into Louis Vuitton with my friend. I'm 20 but look about 16 (so I'm told), and my friend looks awfully young too. I was using my speedy that day, and dressed in jeans. I had made many purchases there before, however the SA I usually had was chosen to go to France to do something with LV. Anyway, getting to the point, after waiting a short bit, an older male SA was able to help me. Not knowing any french or how to pronounce the bag names correctly, I was describing the bags by shape. He understood what I wanted, but instead of talking to me about the bags, his eyes were wondering around the store. I told him my situation (how I had to call my dad to see if I could have his CC #) and the SA never said anything. My dad said OK and so I told the SA which bags I wanted and that I would like to do the order over the phone. He snapped saying that they were unable to do orders over the phone. I told him that not even a year go I had done the same thing, and he said "well the rules have changed." Soooo, after all of that, I asked the SA to write the names of the bags on the back of a business card and that I'd be back with my dad. He scribbled the names on the back of the card, which was unreadable. I think he felt a sense of satisfaction that his judgements were right; I looked young, and was most likely purchasing nothing. Well, it was priceless to see his face when I came back with my dad later that evening. The store was much emptier, and he was one of the only SA's behind the counter. He was THE NICEST person to me, helping me with everything, telling me stories about his family, the LV bags he has, and which bags he recommends. When paying, my dad took out a wad of cash, and then the SA started looking through my history and was like "wow, you've done a lot of shopping here," and started asking me about my other bags, and how I got into LV. I kind of wish he learned a lesson that day, to not judge a book by its cover, but maybe that's his job.
I then recieved something in the mail inviting me to the spring 2006 preview. I wonder if thats random, by how much money you spend, or by rec. of an SA? I thought it was pretty funny.
And now when I go in the store, there is a young male SA that is just wonderful. I've never seen the older man since. =)
At one event I got to have lunch with Michele of Michele watches, which was cool.
she didn't say anything, but the SA who was packing the shoes gave me this fake "understanding" smirk and said: "this is so strange that you have a golden Visa and no money on it" 
sadly the ***hole wasn't there. Now I regret I didn't call the manager but I never know how to behave in those situations.
