Now a receipt has surfaced from that same night, which shows Gronk's hefty (although it could be seen as modest by celebrity standards) $9600 bar bill at XS. Highlights include a bunch of $525 bottles of vodka and $11 bottles of water:

Photo: Busted Coverage.
Gronkowski has apparently responded to the controversy by wearing a "Sorry for Partying" t-shirt:

Photo: meli_garcia.