Nothing they do before you click "accept delivery" will count anyways. They supercharged my car before i took delivery as well and i still had 400 KwH credits when i left, and somehow still had 400 KwH credits when i returned home that night despite supercharging and driving over 350+ miles.
every service center has their own private supercharger set aside for tesla maintenance use. i suspect they have one for deliveries as well. Doubt they are actively using the public supercharger stalls.