We probably spread the planning of our wedding over a year - it might have been a bit longer - but I was doing the final year of my degree at the same time.
We had a day we loved - all our family and friends around us, I felt pretty(ish) in my dress, the flowers were lovely (we bought them and the ladies from the village where MIL lived and we got married, arranged them for us), and had a nice, informal party afterwards. Mum baked the cake, and then we had it professionally iced. My dress was made by my chief bridesmaid's mum, who also made three of the four bridemaids' dresses (dsis made her own). The fabric for the bridesmaids' dresses cost £20 from a stall called Mad Ada's on Bury Market.
It wasn't a big wedding, but there was still a fair amount of organising involved - and travelling too, because I was at university in Staffordshire, we were getting married in Hampshire, dh lived in London, and the lovely lady making my dress lived in Manchester.
I think it might be a lot easier to organise a similar 'do' now, because of the internet, and how much easier that makes communication - I didn't even have a mobile phone (almost no-one did, then), and the internet was a long-off dream - so that made things more time consuming.
If someone wants a huge wedding, with lots of coordinated details, and has the time and the money to do it - more power to them. If someone wants a register office ceremony and a BBQ in the back garden - that's great too. We are all different.