Chanel in Neiman Marcus Standford just had a section on sale on Dec 8th.
Most sale items are old style and not that attractive and special.
Sometimes they have private sale,but not often.
It happens usually one or two days before fist call in public.
I usually will receive personal call to inform.
If you keep good relationship with certain salesperson and keep buying from him/her.Then your sales will call you or send you an invitation card. It also works in other Chanel boutique. That`s just my own experience. Please correct if I have any mistake. Thanks.