establish a connection with the same person every time you visit, in my experience the sals associates do not like sharing clients and usually if you move to the next one, its like starting at the back of the line again
and talking about watches helps, just make it sound like you're just a fan and not some resellers who knows whats gon resell well
as for gifts, i got my sales associate some leather straps and thats mostly because she had a panthere and didnt know where to get 15mm straps while i got some from amazon that was like $12 each for my americaine that didnt work out and they happen to be 15mm too so i just gave it to her instead of returning it, plus she is young and pretty so it didnt hurt to be a little flirty
and to be honest, if it was a dude i would have just returned them to amazon
she has gotten a moonswatch from one of her clients though, now thats a bit much