Ever think the bar on the oil rig could've been used as a stage? It looks modeled and would work like home stage with all those stools and tables. And even if you knock the into the bar you transition into the 2nd floor of the rig.
Accoring to TN, if you defeat 7 good players and make crybabies scream on the mic by trolling them with Leon and Nyotengu you'll unlock the doge lol. But you have to pick the home stage only.