The "whack a mole" machine would go near the 90s gaming bar to make the bar appear like a separate room. So the bar has its own area that is partitioned by retro machines. There would also be bucket bowling next to the bar that would extend all the way to the other corner of the room.
To simplify the layout I ask you to imagine a rectangle in front of you. The top right corner going half way down to the bottom right corner is the 90s gaming bar. The bottom left corner is the "hook a duck" pond with playing table. The center left side is the big screen with 4 recliners and modern games consoles. Between the top right corner and the 90s bar area would be the bucket bowling lane and next to that by the 90s bar would be the "whack a mole" machine. The bottom right corner is the door way in and the center spaced out evenly is the four playing tables, pool, table tennis, foot ball and air hockey.
Lovely place to be, especially if I can make it real.