It is the "You Know the Drill Eatery" on the middle level of the oil platform. (green door)
The room of requirement
The multi-player room is in the Daily Paper building on Main Street.
1. You have to climb the "tower" to your left. 2.Climb to the top. 3. Go more to the left and you will find a sign that says "Control Room". 4. Go in and talk to the guard closest to the wall.
To leave whether completed or not, go outside, use the walkie talkie, and fly in the helicopter back to where you can catch the blimp (the oil platform). (You cannot leave until you have passed through security in the prison. The storm stops while you are in the guard room.)
You have to move quickly to freeze open the door to the next room (the mouse) because the owl does not let you stand next to it. The mouse is actually helpful: freeze him when he is near the right side and jump on him to get over the high wall.
To get the helicopter you must: 1. win all the games on the boardwalk 2.take the jumbo prize you won from the games (win all the games to get the prize) 3.take it to the boy by the cranium shaker and he'll trade you the helicopter for it
You arrive at the Oil Rig in the middle of the ocean. Jump down and across to the rig, then to the Control Room at the top of the rig. Enter and go to the office, where the supervisor is getting a call from a top secret island location. If you agree to investigate, go back outside and take the helicopter that lands on the roof. (see related question)
After you get out of jail, get the time card from the Clown Store and go to the Security Room in the Museum. You can get a photo of the thief from the surveillance videos. Show it Downtown.
The Poptropica blimp is tethered near the oil rig, out to sea. To leave from the lab, you have to leave the prison and use the walkie talkie to call the helicopter. Then you can use the blimp when you get back to the oil rig. *When you first arrive at the prison, you must pass through security before you can leave. The storm will stop while you are in the guards room.
Once you start toward the island, you cannot return to the oil rig until the storm is over. While parachuting down, avoid the clouds that slow you down, and dodge the lightning that can set your chute on fire. When you reach the island, climb the rocks and work your way to the right, then up. If you want to leave the island, you can only call the helicopter after you pass through security. The storm stops when you are in the guard room.
You will be told by the lady inside of the control room to go outside and board the waiting helicopter. When you go outside, go on top of the rig and click on the waiting helicopter. *Once you are headed for the prison, you cannot call the helicopter on the walkie talkie until you have passed through the security check.
You enter the sewer through the restrooms in the park (boys use the boys' room, girls use the girls' room).