My family and I go every couple of years.
We always stay at Poly Concierge and use the Premier Platinum Package.
We have never had an issue getting a table anywhere...even making reservations to eat same day, they always are able to find a way to fit us in.
The only time we have ever had an issue was this year and it was because the Chef's Table at Victoria and Alberts had been VIP booked...even then they offered us the Queen Victoria room.
However, I either use an itinerary planner or wake up VERY Early to set my ressies.
I say that to say this.
I feel it indeed matters. I know that they say it doesn't and I'm sure they try to live by that creed. However, reading the difficulty that some have getting ADR's and never having that same hardship...my only conclusion is that there must be some consideration for where you stay and how you visit.
I totally agree with you on this. this year we are staying at AKL Concerige level and had no problems at all at making any reservations or any times we wanted.