It’s likely that you will have corrections to complete after your viva. You’ll probably still need to discuss your work with your supervisors. And it’s possible that you might want to do more work based on your thesis research, whether that’s as an academic at a university or just for your own private reasons.
And still the viva is most likely that one last time when you will have a chance to sit down and talk with an eager, interested audience about what you’ve been doing for years of work. Not just a part of it, not just a paper or a poster. Hours to talk about everything you’ve done and all that it means.
One last time.
Make the most of it.