Lr is software, when I run into a problem I jump right here before I make it worse. There are so many knowledgeable people on this forum to help, all you have to do is ask. With digital, PP is a necessary evil to make your photos look how they appeared to you when you shot them. :) :)
I've got a LED LENSER P7, amazon has it for $36. It has a high and low beam and the width of the beam can be adjusted also. Used it to paint Balanced rock, delicate arch, and a few others. It uses 4 AAA's and is heavy duty. Enjoy your trip.
They tell you not to remove the lens while VR is operating, in other words, when your finger is on the shutter button, and the VR is actually doing something.