Wedding Hair

I still haven't fully decided what to do with my hair on the big day (it's not really that long now...1st August!) but I have been collating images of hairstyles I like for some inspiration...
As you can see the theme of my hair inspiration is a kind of 'undone boho chic' and I don't want anything that looks too fussy or slicked back. I'm thinking classic and chic.

So have any of you guys got any tips on hair products that last the distance/create great volume that I could look into?

Although, just to COMPLETELY contradict myself...another part of me really wants the 1940's/50's glamourous 'Rita Hayworth-esque' starlet hair like this (minus the red lipstick!)...

I need opinions!