Human: My son is going to a wedding next weekend and wants to know if it is appropriate to bring a gift. Assistant: 
It depends on the culture of the wedding, but in most cases, it is customary for guests to give gifts to the bride and groom at weddings. However, it is not necessary or expected. If your son feels strongly about giving a gift, I would suggest buying something small that he can easily afford and put it in a simple wrapping.