It is permissible to do online nikah if there is no danger of tampering, the identity of the husband and wali is proven, and the two witnesses can hear the proposal and acceptance.

-The best time for Walimah is after the consummation of marriage, following the example of Prophet Muhammad (peace be upon him). However, scholars allow flexibility, permitting it before consummation or after the marriage contract, based on cultural customs and financial capacity. -There is no set number of guests to be invited for the Walimah; rather that depends on what a person can afford.