trip to Las Vegas & Grand Canyon

Last weekend, which was 3 days off due to Good Friday, I and some colleagues went to Las Vegas and Grand Canyon National Park.
From Bozeman to Las Vegas, we took allegiant air, one of the low-cost carrier in USA. The CA in the flight said funny things, such as;

"Please refrain from using Blackberry, blueberry, raspberry, strawberry!"
"We're sorry that we don't have any alcoholic beverages today." (booing from passengers) "Just kidding!"

In Las Vegas, we went the University of Nevada, Las Vegas and "Paris" and "New York"! I think the city is crazy because there are many "cities" such as Paris, New York, Cairo, Venice, etc. On and next to "Paris," there even are Eiffel Tower and Arc de Triomphe!!! Scenery from the observation deck of the Eiffel Tower was so nice. We saw Bellagio Fountain Show as well!
On Saturday, I and another colleague went to Hoover Dam and Grand Canyon National Park. The dam is so huge and has a lot of interesting structures. After around 4 hours drive, we finally arrived Grand Canyon. The Canyon was so amazing and I cannot explain my feelings with the language I have. Even pictures cannot explain the place! Only I can say is you must go there some day.
On back way to our hotel (which took around 5 hours!), I found highway at night is so dark and we see almost nothing but cars' lights on the way and beautiful stars in the sky. I felt as if I drove a vehicle in a car race game! The drive made me tired but now I'm familiar with left-handle vehicle!
On Sunday, we came back home via Salt Lake City. I think I can spend whole day in US airport, as there are lots of interesting things as well as US hub airports are huge. When we arrived Bozeman, I again realized its peaceful calmness and beautiful scenery.
As there was not so much time, I want to go to Las Vegas and Grand Canyon again (but don't want to drive 10 hours in a day...)