Do I need a car in Sedona?+
Realistically yes. The town is strung along two highways, lodging and trailheads are spread over miles, and public transit is minimal. There is a free seasonal shuttle to the busiest trailheads, which helps on weekends, and taxis exist but thin out at night. If you plan to stay put at one place the whole week and walk from the door, you can skip the car. Otherwise rent one.
Will the altitude bother me?+
For most people, mildly and briefly. At just over four thousand feet you may sleep badly the first night, get winded on climbs and feel a headache if you arrive dehydrated. This is not the altitude range where serious mountain sickness begins. Drink more water than feels necessary, go easy on alcohol the first two days, and plan the hardest walk for day three rather than day one.
Is Sedona safe for a woman travelling alone?+
It is a small, affluent, heavily touristed town and solo women travel here constantly. The real risks are environmental rather than human: heat, dehydration, a twisted ankle on slickrock and patchy phone signal inside the canyons. Tell someone your route and your turnaround time, carry more water than you think you need, and start early. Use ordinary judgement about guides and sessions booked from a flyer rather than a real reputation.