According to my opinion people rusk in the marriage are due to 2 reasons where they have waited for the long time to come their turn and get the covers to the couple and then they want to go home earlier .
The second reason behind this is they are rushing due to some foods as the food is tasty or some fastfood items people are crowded and asking the waiter to serve the food as dishes like panipuri, manchurain, dhokla all this type of dishes people are very much hunger to take the dish and eat.
There are more chances of crowd at the food counter only where no one is trying to go all are taking their dishes and begging in front of the waiter to give the food. Sometimes its very funny to see that who is waiter and who has invited for the marriage function.