They can Go two ways.. the Church as a Sect Like Maronites or being a Catholic as a Roman catholic.. either way .. they will get the catechism and the Full Bible with 7 more books!
Maronites are not a sect. They are a specific rite of the Church but they are an integral part of the Church, just like any Latin Rite Catholic (we’re not “Roman”, we’re Latin Rite). Ditto for Syro-Malabar, Syro-Malankar ,Chaldean Catholics.