White cars (along with silver) are the easiest of all to keep looking good. Swirl marks and low level dirt don't really show up at all because they dont have that mirror reflection that dark cars do. I'd never get a dark car cleaned by someone else, but Iive not been so not picky about the white cars ive had.
Learnt my lesson with my black Cupra, never ever again letting someone else clean it. Spent 4 hours over the last weekend polishing, glazing, sealing and waxing it back to showroom condition