Pantry is located by the Guest Elevators.
Walk into the Casino and turn right just past Lobby Bar through the Atrium. Turn right past Heritage Steak towards OTORO. Turn left and walk through the Casino Floor to the MGM Rewards Desk. Pantry will be on your right just before the guest Elevators.
Enter the resort from Las Vegas Boulevard. Walk through two bronze mermaid statues towards the Atrium. Turn right past Heritage Steak towards OTORO. Turn left and walk through the Casino Floor to the MGM Rewards Desk. Pantry will be on your right just before the guest Elevators.