Actually, what I said was the outsourced company may have been required to offer the perk as part of a contract agreement assumption when they first outsourced. Likely their outsourced employees, which had previously been Disney employees, were grandfathered into some Disney employee benefit package where the cost was covered under a common area services arrangement like other shared resort services until this contract renewal date.
For them to bill out each car directly, based upon a membership number, to DVC, it would almost have to appear as a line item in our annual resort budgets that members receive every year...like transportation. Especially given the sheer percentage of valet cars that were DVC members. I never had them take a DVC Membership number, or DDE/TiW number, for free valet...just showed the card and they noted the reason for the free service.
Even if they gave a 70% discount, and billed DVC $3 a car, it would have been a substantial amount annually. Also, if it was actually billed per car, there would have been no reason to have restricted it to DVC resorts only, they could have billed it for all resorts.
If you figure even 150 DVC cars per day, spread through the resorts at $3 each, that is over $160K annually.