Grand Canyon

Re: Grand Canyon

2 Questions as we are looking at hotel options:
What if the senior is in the car with us, does the car still get the discount or no?
How badly does the elevation affect you?

I am looking at pricing options to fly into Vegas and spend 2 nights, then drive to the canyon and stay around there. Hotels inside canyon are booked or way too much$$$$. Checking out nearby options. Is it better to fly into Phoenix and maybe drive up to Vegas for a day or 2?