First, AWESOME photos! Truely amazing photos.

As far as Phoenix to Vegas, depends on which route you're taking. If you'll be arriving here at 6 PM MST, you're looking at a long drive to Vegas. The most direct route is US 60 to US 93. For the most part, this is a narrow two lane road from Wickenburg to I-40. I can't give an accurate assessment of time from Vegas to Phoenix, not only because we had to bypass Hoover Dam and go through Laughlin (due to driving a U-Haul Rental Truck), but also because that same truck encountered some moderate problems and left us sittin on the side of the road for a good hour or more until it cooled off enough to add water.

If you go up over Hoover Dam, it might be a little less time, depends on how long the line is for the Security Checkpoint. I'd venture to say you'd get into Vegas some time between 11 PM MST and 12 PM MST (reminder, Arizona does not change with the rest of the country for Daylight Savings Time / Summer Time, so in summer we're equal to Pacific.)

If you do plan to stop in between, about the only place to do so is Kingman. Golden Valley does not have much, and unless you're going through Bullhead City, AZ and Laughlin, NV, there's nothing else around for the most part. Kingman would be your best bet for stopping for the night. There's limited services along US 93 between Wickenburg and Kingman.

Hope this info helps.

-Brad