There is a well known "Jewish" school that has a yearly dinner dance. They are not even embarrassed to publicize it.
And they charge over 30k [!!] a year in tuition in order to poison children's minds with such ideas. Hey, you can poison someone's mind for free - why pay sooooo much. Imagine someone has 4 children - 120k a year.
I say - move to Israel, send them to a good talmud torah where they will absorb pure Jewish values. And donate the money you save [115k or so] to Shaarei Tzedek Hospital!:-)
Ahhhhhhhh.
Here is a interesting teshuva on dinner dances including a response to the claim that it is OK because everybody is dancing only with their own wives. .