According to the traditions in your country or locality, who should host the wedding reception: the bride's family or the groom's? In your post, please state the country or locality whose traditions you are describing.
I think in most Western countries, the bride's family shoulders most of the expenses. But in most Asian countries, it is the the groom's family that pays for practically everything.
Traditionally, in both UK and USA, the groom's family pays for the rehearsal dinner while the bride's family pays for the ceremony and the wedding reception.
These days, however, the bride and groom usually share the costs of the wedding, with only a bit of help from their parents.
I was born in the great state of Texas in the USA. The bride’s family is expected to pay for all wedding related expenses. However, the groom is expected to pay for a fabulous, week long honeymoon to some exotic place
I'm British, but I was able to visit the Philippines last March. My brother has been working there as a researcher, and he invited me to visit the country. I was so amazed with how elaborate their traditional weddings can be. Back there, the groom's side usually pays for most of the expenses. The bride's family may even expect a wedding dowry, but I think this is not very common now. The groom's family usually covers all the spending, as Filipinos have this strong belief that they would never spend just to give their daughter away.