No two vivas are completely different either.
One friend might have a two hour viva, another’s is three – but both got minor corrections.
One friend might have been asked to give an overview of their research to start, while another was asked how they got interested in a topic – and both were done in under 90 minutes.
One friend got minimal corrections, another got major – but both enjoyed the experience.
Any two vivas will have similarities and differences.
Many vivas have common similarities – approximate length, tone of examiners, areas of questioning maybe within disciplines – and ways in which they differ. Differences don’t mean bad things, just difference.
Listen to stories and realise that vivas generally are fine, and that there are some expectations underneath all of the variety of experiences.