Todd Spangler NY Digital EditorAt the 11th hour, Amazon has come on board as a partner for Disney Plus’ “Mulan” $29.99 early-access movie release.“Mulan” is available for purchase inside the Disney Plus app on Amazon Fire TV and Fire Tablet devices, an Amazon rep confirmed Friday. As previously announced, Disney Plus subs also can buy access to the live-action remake directly through disneyplus.com as well as through Apple, Google, and Roku devices for $30 in the U.S.