well, geez, this is weird to get refreshed in June, but:

I waited til a 'lull' in the proceedings on Christmas Eve (after everyone's organized, way before time to leave for something) and passed out sheets while people were sitting around. Arbitrarily said, "Constance Marie (names have been changed to protect...), you sing this one with me", and you others will get your turn. We just went around in 2ses and 3ses. The ones who didn't like singing much alternated reading 'the twelve thank you notes'. It was fabulous. And the Baptist lady like it the best.

Last year, similar group, didn't try to do it 'cause i was sick. But the host relatives put a creche out in the woods and set a trail or luminarias out there, and Christmas eve they trailed us out there, singing a carol and read part of a Gospel, and sang another carol, and traied back to the house in the bitter cold night. It was perfect.

Summer? Coupla times I've got them to sing around a beach bonfire after dark, but it's mighty rare.