Moderator: Hyatt; FlyerTalk Evangelist
Join Date: Jun 2015
Location: WAS
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If you have the flexibility, maybe play it by ear? See how the weather is the week before + the forecast before making a final decision.
For most people, Yosemite probably has more "wow" factor, but I like Death Valley too, there is actually interesting stuff in the desert, plus lots of colors in the surrounding mountains etc. If you do choose DV, I suggest staying in the Furnace Creek area for locational convenience to the various sights.