Confused about flowers

Flowers seem to be the hardest part of wedding planning so far! We're not really fussed about flowers and don't want to spend much on something that's going to last one day so not really sure what to have. I know I need bouquet for me and my one bridesmaid and then some buttonholes. We're not having flowers for centerpeices to keep costs down but not sure if we should have some dotted about the place for decoration. We're getting married in a hotel so they'll be three main rooms we'll be using, I just don't want the place to look bare without flowers. Also should I have some flowers at the end of the alter where we get married, would it look odd with nothing there? How did everyone get quotes, do you just email florists with what you want and they give you a price or do you need to meet with them to go through it all? I've got some brooches from my gran would a florist be able to incorporate them into a fresh flower bouquet? Sorry I'm clueless, any advice appreciated.