We did not wear our ears until our big day, but we did wear them after. We did wear our buutons prior to the day though because a cast member told us we had to.
We wore them the three days leading up to our wedding and occasionally on some of the days after our wedding - really depended on what we felt like doing. When we first got into disney we definitely wanted to celebrate the fact that we were getting married!! During our honeymoon, sometimes we just wanted to enjoy ourselves and it didn't matter if people knew it was our honeymoon or not..
Do what's comfortable to you - there are no rules!
I'm probably going to wear my ears just b/c I've wanted Disney bridal ears for so dang long...but practically speaking it's HOT in August and I don't think I'll want something on my head at all...the buttons are bit more on the suave side!