I found it a bit arduous to read through that link tbh. Far too long for light relief imo.
In regards to weddings, they are what you make them. I've been to a few 'biggy' white weddings-mainly where the families are minted and so can afford them- I've been to just as many 'wedding parties' where they've been abroad eloping, eloped in the UK or gone down the registry office.
There's big money to be had in weddings, put the word wedding in any quote request and prices triple- supply and demand. That's why I found moneysavingexperts site so useful-great for budget weddings and saving pounds.
I think everything's more about supply and demand though - christenings, confirmations, birthday parties...I went to a baby shower the other day where we'd been issued in advanced with a url to a guest list! In contrast my sister didn't want or have one.
When we get engaged, people asked us about an engagement party and engagement gifts from our older relatives, not the younger ones- DP and I hadn't ever heard giving gifts and no one I know has had an engagement party.
Weddings are stressful though, very much so. Sometimes it's the bride/groom getting in over it (and so often the bride is blamed when it's the groom being the zilla- I see it on MN too, automatically it's a bridezilla calling the shots even when the groom is related to the moaners!), often it's the guests. There's something about big events that brings out the worst and best in some people.