This is part of the quest Trouble Brewin. There's a raider defensive perimeter around the building.
Cooking station in the first floor. There's an Advanced floor safe behind the counter with the collapsed floor so you have to go around the kitchen to reach it. On the shelf above the floorsafe, there's a Gwinnett Lager recipe holotape.
In the second floor, the room to the left in the end of the hallway has a green steamer trunk, Shamrock Taphouse Key, and Expert Wallsafe.
In the billiards area, there's a mini-nuke stuck in one of the billiard table's pockets.
There's an advanced door (can be opened with the Shamrock Taphouse key) along the corridor in the lower floor. Behind it is a chem station with several alcohol and chems.
In the kitchen area, if you open the double door, you may encounter a large radroach. There are two Nuka-Cola bottles inside. In the room before the basement door with couches, you'll find a mannequin with welding googles. She's holding an issue of Total Hack. Get it to obtain its bonus effects.
Head to the basement and clear the molerats inside. There's a terminal and another key to this place on the drawer ahead. There's also an armor workbench inside.
Activate the Expert Terminal to Power up the modified protectron, Drinking Buddy. The password to the terminal is located on top of the shelves, as a holotape on top of some wooden crates under the flashing red light.