Any updates on this situation. I'm in an exactly same situation with a "reputable" dealership.
Discovered serious amount of overspray around every corner of the car and then some. More than just a "recon" job.
They've refused a refund under my CPA rights to a refund, since the vehicle passed...
A one pack will work fine since our house is not that big, a 2 pack will be an over kill.
Regardless.... I'd really enjoy better wifi coverage at home.