I went to WDW a couple to get my first DDB. (Well, also to go on vacation)
I looked at the bags at MK jewelry and asked at CM if they had any other in stock. She told me no, they had them all out. I found one in the window, that I would like to look at, so I asked another CM if I could see it. He said no, only the decorating people could take it out. This bag was on the top, so it would be super easy to get out, but no! But they did have some in stock that he could show me????!!!! So he found 6-7 bags in the back to show me. I guess they did have some in stock!
The next day I went back in and asked a 3rd CM if I could see the one in the window... No problem, she got it out for me right away.
So I did learn not to settle with the first answer, it really depend on the CM! ;-)