I am soooo sorry to hear that !
But you are doing the exact right thing! Go for this holiday and life what you were planning for! (he will be with you anyway!)
I had a quite similar experience...
My father passed away only 7 month after his 50th birthday, 04/27...
We had planned a trip to Florida too...
Guess when it was???
2001! NINE Years ago
There are NO words to take any pain from you but I can promise that there will be a time when you are feeling better.
Enjoy your trip, soak up some pixiedust
and try to enjoy everything twice as much now that you sadly know how quickly everything can change or end...
Oh, another part where I have to agree... I wouldn´t do the "romantic" part with MK view either...
THAT would be too much and I would skip that too!