I entered a contest recently, sponsored by a wedding page. They posted this gem up today:
It doesn't start too badly. Until 'reception invitation':
"
Reception invitation
If some guests are to be invited to a separate (and more exclusive) reception after the ceremony, then the following information should be included on a separate card:
[...]
• financial contribution for the meal (if applicable)
• dress code or theme
"
Sigh. I'm pretty grumpy today, so it's probably me.