Kammala jumla mai zuwa: A ranar 15 ga Janairu, 2015, Carey ta bayyana a "The Ellen DeGeneres Show" don sanar da cewa ta sanya hannu kan kwangila don zama a The Colosseum a Caesars Palace hotel a Las Vegas a watan Mayu da Yuli 2015; ana kiransa # 1 zuwa Infinity. A lokacin hirar, Carey ya tabbatar "Zan yi zama na farko a Vegas a Caesars". "Wannan lokaci ne na musamman a gare ni. Kuma a sake, Ina fatan cewa magoya baya za su ji dadin wannan saboda zan yi, wanda aka yi wahayi zuwa gare ta ta album "# 1 ta", kuma wannan shi ne yanzu da sabunta version da goma sha takwas daga gare su. Da fatan sauran mutane za su ji daɗin wannan. Ban taɓa yin haka ba". Tabbatar da zama na Carey ya zo ne bayan da Celine Dion ta sanar da cewa ta dage kwanakin zama a Caesars Palace don kula da mijinta, René Angélil, wanda ke fama da cutar kansa. Baya ga raira waƙa "Infinity" a gidanta, Carey ta yi rawar da ta yi a shekarar 1990 "Vision of Love" wanda ya biyo baya "Infinity" a
"Billboard" Music Awards a ranar 17 ga Mayu, 2015; shi ne wasan kwaikwayonta na farko a bikin a cikin shekaru goma sha bakwai. Andrew Hampp na "Billboard" ya bayyana wasan kwaikwayon a matsayin " tsalle-tsalle " kuma daya daga cikin abubuwan da ba a iya mantawa da su a daren ba. Sauran bayyanar da aka gabatar sun hada da "Jimmy Kimmel Live!" da kuma "Live! tare da Kelly da Michael". Don na biyun, Carey ta sa rigar da aka yi wa Aurora wahayi daga fim ɗin Disney "Sleeping Beauty" kuma ta yi a Main Street, Amurka a Disney World.