A friend is having a wedding at a very ritzy country club. This country club has a very strict no exceptions dress code. My friend wants to get the word out about the dress code for the wedding (she is pretty sure some people will show up in jeans) but she has suggested putting it on her invite. I told her that it was inappropriate to put it on the invite and instead she should put it on her website. I know it's against etiquette to tell people how to dress but she is afraid people will be turned away at the door if they are under dressed.
Suggestions?