1. Nothing special. When you attend other people's weddings, you mainly support and have fun together (if the bride or groom is particular about it), but as a classmate, you can do what you can, such as putting up happy words, setting off firecrackers, and accompanying the groom to find shoes (it is a custom to marry the bride to find the bride's shoes). However, these host families usually have arrangements long ago, and you don't have to be ignorant.

2. Gift money must be paid. You can give it directly to your classmate (better not, because he has a lot of things to do that day and may lose it. Maybe later, he can't remember how much gift money you gave) or give it to the cashier (it's a special bookkeeping, so write down your name and gift money), which is relatively safer. As for the amount of gift money, do what you can. Students are generally not less than 200 yuan, but more than that.

3. Just send gifts and wine! There's nothing wrong with it.

Have a good time.