I know your pain.
Before Xmas, I booked a 10 night family holiday in Bali mark my 50th birthday last month as I had been Afib free for 10 months.
But between Jan 11 & Feb 28, went into Afib and had to be cardioverted each time.(basically 3 times in 6 weeks)!
On the second occasion, I agreed to have an ablation & it was booked for the 23rd of May,(after our Bali trip)
When I went into Afib for the third time, I decided I was more important to have the ablation, than go to Bali, so brought the date forward to th 20th of April(a couple of weeks ago.
It seems that travel insurance companies here in Australia won't include cardiac cover if you've had an unexpected hospital admition in the last 12 months.
I was planning a fairly active holiday (white water rafting, downhill mountain biking, snorkelling etc.) and didn't want to go if all I could do was sit around a pool and watch other people drink cocktails!
THe airline gave me a credit for the flights, cancelled the bookings that I hadn't yet paid for. But had booked and paid for the last 3 nights in some fancy 5star accommodation (at a great non-refundable price).
But even so, with a letter from my cardiologist, they gave me a refund for two of three nights. So was only out of pocket $300.
Figured that was better than running the risk of ending up in an Indonesian hospital with no travel insurance, and a massive medical bill.
I still plan to go when I can get travel insurance ( which I hope will be in 11 months time).
ultimately, it's your call. If you go into Afib, and your rate is controlled, it's not that big a deal .
My wife is super cautious and put the brakes on our holiday when I went into Afib for the third time in six weeks ( fair enough I guess?)