I went to a Sikh wedding a while ago, the groom’s family was Sikh and the bride’s family was from Vancouver. After the service the bride and groom sat on the floor while people talked to them from behind. As they were turned to talk to the people behind them everyone else would pass in front of them and leave money in their laps. There were no gifts.
They also did a North American type reception a few days later and there were gifts for that but they were registered.