Does the Eastern Orthodox Church acknowledge the validity of self-started Eucharists?

Let's say on some island in Oceania the locals one day found a King James version (or any other version in their own language) and believed into Christ, started having regular meetings, in which they would pray and practice Eucharist with bread and wine. Will the Eastern Orthodox Church acknowledge that kind of Eucharist as valid, that is, a true Eucharist?