Las Vegas is not everyone's cup of tea. I find it gets pretty boring after about two days.
I took helicopters to the Grand Canyon which landed in the canyon so that we could have a picnic lunch. That was fantastic.
But even better I went rafting through the upper canyon as far as Phantom ranch and then hiked out on the Rainbow Trail. That trip was out of this world. Five days. I would recommend it to anyone. You can see some great footage of people shooting the rapids on YouTube if you are interested.