Thanks, one and all.
Believe it or not, we made it to both and STILL had time to.....
elope.
Red Rock would require a LOT of good sky to make it work, which didn't happen, and we had a bit of a disaster at VOF, leaving on a short hike far, far too late and breaking at least 4 basic rules of survival.
But, hey, she married me, so it's all good.