I think its to some extent a colour dependent thing - most dealers will not make too bad a job of a white or silver car - but Pearl Black and Carbon Grey need specialist preparation...
I drove my car for three weeks untouched as I could not get in to the detailer any sooner - but it was worth it :-)
Agree, silver and white are more forgiving. Dealer inflicted swirls might still be there though
I'll be giving it the full detailing works myself when I get it. Will want to get it sorted asap and probably have to book some leave to get it all done, otherwise I might be driving it around untouched like you.
I've had lots of black cars and to be fair in the cases where the dealer has prepped the car in the past, they've not done too bad a job. But I've got much, much picker over time so now I'd rather they leave well alone.