Good luck...
I had my op 3pm weds
4 hours in theatre due to lots of adhesions sticking my liver to stomach to sort out prior to bypass bit...
Out of recovery at 8pm onto ward..
Thursday I was up doing short walks and saw surgeon who said I was to stay on ward till at least 6pm and then if I felt well enough I could leave.. If not I could stay till the morning..
I left at 7pm Thursday and went home for the best nights sleep ever lol...
Your body will tell you and as other have said get moving ASAP as it helps you heal and get the blood flowing x