It is polite to arrive on time, or just a few minutes late. 准时到，或只迟到几分钟，是礼貌的。
Bringing a small gift, like flowers or fruit, is always appreciated. 带一份小礼物，比如鲜花或水果，总会受欢迎。
Offer to help and remember to thank your host before you leave. 主动提出帮忙，并记得在离开前感谢主人。