Recently and while attending my son's wedding, I was so very astounded with the service provided during the reception dinner. Waiters marched in in exact numbers for each row, with a plate in each hand. Stopping behind each guest, servers delivered plates simultaneously on the elongated tables.
Such and elegant and stylish touch, I thought. No need to stall while others at the table wait to be served, as victuals becomes chilled or wilted. I understand this technique of service is referred to as "the wave".