Bridal Shoes for "Bad" Feet

Hey all! So, I've been pondering my footwear for awhile now (mainly because I've developed awful plantar fasciitis), and don't know what to do. I want to wear flats, so at least that's in my favor for comfort, but otherwise I have no clue what to do. I wear nice, supportive tennis shoes on a daily basis for work, and even those aren't comfortable on my feet anymore. I just can't stand the thought if my feet being in such agony on my wedding day when I want to dance and enjoy my time. Any other brides out there with similar footwear woes? Any recommendations for decent looking shoes? I've heard decent things about Tieks, but worry there is no way that they can be supportive enough since they're ballet flats, especially for the cost...