I think it depends on what showcase you are in. I think buyers actually do check out the weddings showcase. I have only done it a few times, the most recent one was in August and it gave me a little over 100 views but about 20 likes and one order. I see you sell wedding items so you may have success with it.
However that was my most successful one. The previous 2 just gave me more views and a few more hearts.
I too agree with crochetgal, I never look in showcases. But I honestly think brides do.
So the moral of my story is it's hit or miss!
Personal note to self: what am I doing on Etsy at this hour?!