Guest are welcomed by the event master, they are registered, given name badges. Canapés, welcome and drinks are the most common add-ons to ease the waiting time for last minute guest arrivals.
The event kicks off when:
(a) all guest are in the house
(b) not later than 30 minutes from beginning of the event (if not all guests are in the house, event master needs to coordinate with organiser of the event)