There are some foreign languages that are groups hosted by other congregations. I have a friend in the Arabic group, they don't have the theocratic ministry school & service meeting in Arabic they just meet with the congregation who's hall they share then the Sunday meeting is in Arabic partially translated. The Russian where I visited are a complete congregation in Nyack; they share with two other congregations French + English.
The Huntingdon Valley Russian is a complete Congregation as well.