say $shop->ShopperDueDate->andand->day_name();

##</code><code>##

    say $shop->ShopperDueDate->?->day_name();

##</code><code>##

    say $shop->ShopperDueDate->&&->day_name();

##</code><code>##

    say $shop->ShopperDueDate->day_name() if $shop->ShopperDueDate;