Dressy casual. It can get chilly in Sedona after the sun goes down in late October.
If finding somewhere local to Sedona is tricky, Cassie’s hometown (Cottonwood/Clarkdale) is also an option. Cottonwood/Clarkdale are a 15-20 minute drive away.
Sedona and the surrounding areas are a smaller town feel- Uber/Lyft are not easily accessible in the Verde Valley.