My sister got married last year. The coming Diwali will be her First Diwali. As per the (Marathi) tradition, her Diwali will be celebrated at our house along with her husband. Other than buying them clothes, preparing sweets what other things are customary ? Do I have to also invite my brother in-laws family too and buy them clothes ? Do I have to go to my sister's house and bring them with me to our house rather than they just showing up here? I want to make sure I don't overdo or underdo it reason being my sister is short-tempered and highly in favor of her in-laws. I also would like to understand the purpose behind this custom.