You're exactly right. We specifically went the last week of September four years ago, when the Fall color was at its height, and we took full advantage: We flew into Las Vegas, (rented a car with free mileage), and headed two hours up the freeway to St. George. Spent two nights in the timeshare in St. George, seeing Zion during the day (it's only 45 minutes from St. George.) Then one night in a motel outside Bryce Canyon, (to get sunset and sunrise over Bryce Canyon.) Then the next day we went to Kodachrome State Park, then drove Utah's Scenic Highway 12 through the Escalante to Torrey (incredible Fall color along the way, over the Hogsback.) Overnight in a second motel in Torrey, which let us see Capitol Reef National Park. Then we drove back on Highway 12, and dropped down to the North Rim of Grand Canyon. Stayed the third night in a rustic cabin inside the park, did the sunset and sunrise, had breakfast in the North Rim Lodge, then drove back up through Kanab (very cool Old West town where they filmed many Westerns) and through Zion from Mt. Carmel Junction. On to St. George where we relaxed the last two nights at the timeshare before driving back to Las Vegas, turning in the rental car, and flying home. it was a whirlwind week, and we put 1500 miles on the rental car (Yikes!!), but the trip was amazing!!
Dave