When I RW my cars I use the Cobra Guzzler. I pat each panel dry, it takes time but since you're only doing one panel it works good.
For 2 bucket wash I use the DP blower.
You tube to learn oil changes, hint they are SUPER easy to do. And buy a pair of ramps.
If they keep chipping the edge of the hood you could cover it with painters tape when you take it in for service.