Actually no need close door. Just start the ceremony and serve the food on time. Late comers will just have to miss the few starting dishes and still have to give ang pow......hahhahahhahaYes, that is good. Make sure you collect angpow in advance before the big day.
At 7.00pm sharp on the big day, banquet hall door close. Proceed serving dinner.
Late comers, will be rugi to have paid but cannot enter hall.
Put up a tv screen outside the banquet hall showing live camera feed.....