This is just an observation made from reading various posts but it seems that people who normally would have some semblance of intelligence any other day of their lives are automatically expected to be dumb as a rock at a wedding and not have any clue what is going on. Hence all the poems, signage, etc explaining how to do something or where something is located, what something is for, and so on. Does this actually happen in real life or are these folks just paranoid who think their guests won't know what is going on otherwise, even though they may be highly intelligent in their everyday lives?