The question really has to be - why go on holiday in the first place. I mean, it will hardly be enjoyable will it.
I arrived on my Jet2 holiday in Croatia yesterday and we are having a great time so far. Yes, we had to wear our masks in the airport, on the aeroplane and on the transfer to resort, but that was absolutely no problem at all. Here in resort everything is open, bars, restaurants, water activities etc, and the only time masks are required are if you go inside shops/supermarkets.
My question is why wouldn’t you, just pick where you go and don’t be overly upset if things change. Embrace the new normal.