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I'm on board for wanting such features.

Your domain strength is pretty high, so on your home page and top pages, those navigational links are going to be fine, but you could nofollow the bulk of them on the individual blog pages. You already have the tweet and facebook like buttons that are getting use, but you might be able to add some easy to copy & paste code, similar to a badge, to try and boost inbound links (http://www.seomoz.org/dp/badges). Also, since you have so much content you could try getting a Polyvore-like feature added to your site that helps people make a collage from the different wedding details they like. (http://www.polyvore.com/). I didn't dig too deeply so these are just off-the-cuff examples, but hopefully enough to spark some ideas for you.