For the past two years when Shavuot comes up my wife and I have a whole argument about eating only dairy on Shavuot. She inevitably wins due to either a. "I'm cooking" or b. "We're going to my parents and they only eat dairy". I've tried to convince her that the custom doesn't meant only dairy during the holiday, but to no avail.
I'll show her this post by Harry, but I really don't think that it will have any effect. The next objection will be "But it's my family's minhag and I'm cooking". What can I do?
Well for the next few years we'll be in Israel and there'll only be two dairy meals but I'm lactose intolerant though that doesn't seem to be a reason to stop a minhag. If Harry's post is accurate (I'm assuming it is) most Jews I know are following a mistaken minhag of only having milhig meals and not having both.
I still wont win.