Except for inept ATC at one end of the journey......
I do a couple of long distance flights in my aircraft, I get some vectors sometimes, sometimes I don't. If it ever got to the point that a few vectors were critical to my fuel state I wouldn't do the flight. If I did the flight anyway, got vectors and my fuel state got low and I had to pan-pan or mayday I'd be a bit of a ******** eh?