Hope and the Viva
You can hope that your viva won’t be too long – but be prepared to engage for as long as is required.
You can hope you don’t get corrections – but know that the most common outcome is minor corrections and know what’s involved.
You can hope your preparations are enough – but perhaps it’s better to do the work and feel certain that you are as ready as you need to be.
There is a place for hope in the viva process. I think that comes after you’ve done the work and have a feeling you’ve done all you can to be ready.