@John Huebner
Menu items have the same fields and structure in db as any post type. So, data for menu items is stored with the same logic as it is done for post types. You don’t need add any special words near ID in second param of get_field / the_field functions. You can get values anywhere, just need to know menu item ID ( not “object_ID” ). But, mainly, I believe, it will be used in a Walker, for example for creating some Mega Menus.
@pagol
without 3rd party plugins not possible to set filed for nav menu ?
No, ACF has no such location rule by default.
