Don’t hope for a short viva. Don’t hope for no corrections. Don’t hope that your examiners “go easy on you”.
Don’t hope they tell you the outcome at the start. Don’t hope they have no comments. Don’t hope you won’t be worried or nervous.
Hope is a powerful thing, but you can do so much more than hope when it comes to your viva.
For some of the points above, you have no control at all: so why focus on them when there are things you can do something about? Better to put your efforts where they might do something. You can do a lot more than hope you won’t be nervous: you can act to work on what makes you nervous, and act to boost your confidence and offset anxieties.
Don’t hope for things you can’t control. Do more than hope for things that you can. Put your focus on more than hope.