Air New Zealand Air Points - Are all available Expert Flyer seats available to ANZ Online Seat Request?

I'm curious if all the ANZ seats shown available on Expert Flyer can actually be selected on the ANZ Online Seat Request. Presumably, ANZ does hold-back some seats for day-of-flight or airport check-in; have those seats already been blocked on Expert Flyer, or do the "available" Expert Flyer seats include seats that can not be selected until day-of-flight or airport check-in?

You'll only be able to select seats for which you have access (eg not premium seating unless full fare, koru club or have status).
For domestic I believe seat allocation can be done up to the last seats (as opposed to international where seat allocation stops before being fully allocated to allow families to sit together).
Some seats that have just been taken may appear as available on expert flyer and vice versa.
Not sure how well it shows seat blocks (probably doesn't differentiate between a block and an allocated seat).