A wedding banquet usually refers to a banquet held in a hotel or restaurant with a clear definition. In the traditional culture of China, the wedding banquet generally refers to the banquet held after the wedding, which is usually funded or organized by the bride or groom's family or their parents. This tradition of holding a banquet after marriage can be seen in most cultures in the world.
Wedding banquet is a broader concept, which includes the diet and etiquette in the whole marriage process. In ancient China, the wedding banquet was a family dinner held at the woman's house, and the man could not attend. In modern society, the concept of wedding banquet is gradually integrated with wedding banquet, and the difference between them is not particularly obvious.
Therefore, in the specific use, you can choose to use wedding banquets or wedding banquets according to the context and habits.