Fastway are upgrading their computer system this weekend and will be off-line most of the 24th and the 25th.
So if you don't get your normal Fastway delivery options in the checkout of BeanBay, that will explain why.

You can either select another delivery method or wait for Monday to place your order.

Apparently apart from moving the servers from NZ to AU, they are also adding some "authority to leave" features that you should be able to access in the future while your parcel is in transit.