You read so many threads on here where posters are complaining about the cost and inconvenience of these expensive affairs. I have also heard people in RL bemoaning the expense, the pressure to attend, the having to take annual leave from work etc.
So I do wonder why brides continue to have these expensive shindigs when they must be aware that it means at least some of the group being put under pressure to attend when they can't afford it, or not being able to go when they could attend something a bit simpler and cheaper?