Hi Mary, and thanks for asking.
If I were in your position, I would confer first with leaders/natural helpers of those language groups in your community. Ask them for advice not only about language issues, but also about ways to promote cultural exchange/celebration within your client population. Possible strategies might be to promote celebration of the different cultures with meals, parties, music and ethnic celebrations that involve all of the clients - don't leave anyone out. My personal belief is that the more fun people can enjoy together, the more understanding and the fewer jealousies may arise.
But the ethnic community leaders in your area will know more than I do about how to promote cultural exchange in your vicinity. Please ask them for the advice you seek.
