I am looking for some itinerary help. I have only 4 nights in early April. Flying into Las Vegas, arriving 9 AM. Plan to rent car and drive to Zion. During this short time frame would like to see and do as much as possible. We expect to do a lot of driving, after all, it's a weekend road trip. Would like to see Zion NP and Bryce Canyon, and anything else we can squeeze in. I realize Canyonlands is not in the area of Zion and Bryce, but wondering if I can squeeze it in too? Basically, we have from about starting on the road around 10 AM on a Friday, from Las Vegas till our 3 PM flight on Tuesday from Las Vegas. How much can we see and do during this four night, five day trip?