According to TMZ - Gronkowski and his 20-man entourage went through so much booze that reinforcements were almost called in!  

“In total, Gronk’s gang tore through 160 BOTTLES OF CHAMPAGNE including … “18 bottles of Ace of Spades Rose: $18,000 … 15 bottles of Dom Perignon Rose: $27,000 … 16 bottles of Grey Goose for $10,400, 45 orders of Maker’s Mark, 24 shots of Jim Beam Fire, 3 bottles of Don Julio 1942.”

Now it's likely the casino picked up the tab.   Rob Gronkowksi is scheduled to make over $4 million in base salary next season.