"Casual" wedding dress

[Hiphopapotamus4]

We are getting married next year but it's going to be really low key - ceremony at a tiny venue with immediate family then out for a lovely meal. I want a dress that is both beautiful and casual/subtle. Asking the impossible I know!
I also don't want to spend loads.
I have an idea in my head but not sure how to describe it. I DONT want 50s style tea dress, but I love "vintage" styles with subtle little details instead of "in your face glam".
I am on the verge of giving up and wearing a bin bag.
Please lovely people, help me find my perfect dress!

[kavvLar]

Are you thinking shorter length? Are any of these in the right direction?

m.asos.com/frock-and-frill/frock-and-frill-heavy-embellished-sparkle-2-in-1-midi-dress/prd/5846948?iid=5846948&affid=14179&channelref=product%20search&mk=abc&currencyid=1&gclid=CJySvrWU4M8CFQ2ZGwod4qICHQ

www.etsy.com/uk/listing/462885632/vintage-cream-and-ivory-short-party?&utm_source=google&utm_medium=cpc&utm_campaign=shopping_uk_en_gb_a-clothing-other&utm_custom1=defa047f-4b19-4379-b071-e66462d2c14a&gclid=CNKywdOU4M8CFRcYGwodYZwFlA

m.debenhams.com/webapp/wcs/stores/servlet/prod_10701_10001_008010740986?CMP=SSH&tmcampid=28&tmad=c&sku=8184708&placmp=SSH_2826109765_274468610_17050224770&mkwid=sMUOPTb80%7Cpcrid%7C69400326050%7Cpkw%7C%7Cpmt%7C%7Cpdv%7Cm%7Cprd%7C8184708&gclid=CIyy2sGV4M8CFeoW0wodRjcJUw