Rule of thumb, relationship between you and AD start from a datejust, still don't get what you desired, buy more datejust and eventually you will be offer one of your choice.
Joke aside, sad but true, there are no such thing as "waiting list" here in our local AD, they asked to put down your name or name card and period. You won't be able to tell how many more people are ahead of you, how long you need to wait, etc.
AD certainly got stocks and they only reserved to those top dog or oversea grey market.
Local secondary market or grey market are able to source me any hot SS models within an hour, submariner, new pepsi or even ceramic daytona, you named it, from their so called 'agent' or 'broker' and who are those agent?!
At the end of the day, Rolex is freaking easy to get if you willing to pay premium.