From my experience, if u walk in to the AD and ask them certain models that u're interested and if they have it or not, then they will start treating u nicely or give some sales talk.
If u go in, the SA ask, "May I help u? and you reply "just take a look", and later on if you really caught an eye on a certain piece and wanna try it, u can tell from the look of their eyes like they're not prepared to take it out for you.
One time, I just walk to the AP boutique, just ask them "do u have the diver"? Then they started "yes, yes", and all the sales talk comes in and insist that you try it on. Had other similar experience like this....
Another interesting experience is I have to argue with the SA to prove the model of the watch. I went in to an AD and the counter is displaying PAMs. The poster for that counter was showing a 351 but I mistook it for a 312. So, when I asks the lady SA, do u have the 312 like the one on the poster? She said "NO and that's not a 312, that's a 351. Well, the colour of the poster can't really shows the watch is titanium 351. So I said, ok, the 312 is similar to the 351 except it's not in titanium and the dial & hand colours are different. She said "NO, the 312 is not like this, it is totally different watch, different case. After few exchanges of words, she still insists that the 312 is totally different to the 351 as she has sold the 312 last year.
KNN....she want to bull me or what? Then I thought to myself, why bother and walk away!!!