My husband wants to take a couple of the grandkids to Las Vegas this spring. A 14 year old boy, and a 10 year old girl. Any ideas on what they'd enjoy seeing? Shows?

We probably won't stay in Nevada the whole time...maybe a few days in Southern Cal...or maybe a trip to the Grand Canyon (but not if it's too cold)...maybe a side trip to Oatman...

Thanks for any ideas you care to share!