The Bachelor Eve Bill

CJ has carefully planned a classy Bachelor Eve. Just close friends of the groom, having dinner at a nice lounge, and everyone pays their own bill.
Then one overexcited groomsman starts ordering premium drinks. Another invites extra friends. Someone else orders plenty of food. Then the bill arrives.
What happens when the bachelor party is over, the drinks have been enjoyed, the memories have been made and then the waiter presents the bill?