I’ve had same op, I’m guessing you’re not considered ‘urgent’ as my wait was 24 hours but 2 arteries were 97% blocked. I was playing squash on the Friday but thought I had indigestion as I’m a bit of a fitness freak I asked my doctor for indigestion stuff, my doctor insisted I go for scan so the following Friday I had scan with operation planned for Monday I remained in hospital and on the Monday morning before the planned op I had my one and only episode where my heart stopped and my bedside machine was reading over 250bpm,had I been anywhere else other than Coventry hospital I wouldn’t be here,my advice would be stay near your hospital and forget travel as you just cannt tell what’s around the corner, btw Iwas out in 4 days and up and about in a fortnight so if you’re fit you’ll get through it absolutely fine.
Now my open aortic aneurism repair was a different story