For the OP:
- Yes, rain just helps wash the soap off faster.
- I don't have to ask at this point.
- She's never given me any nicknames, but that's likely because she likes riding in a clean car.
My wife, family, and friends all know drinks and food are a "no-go" in my Z. As for washing; just about every weekend. Wax as necessary. I keep a microfiber in the car to wipe off dust. Fortunately I park in a garage at work so it avoids the Florida sun most of the year.