What ever you do- DO NOT DRINK! Think this through, write stuff down...make a proactive, informed decision and approach your neighbours in neutral territory..if poss. Don't deal with it when you are feeling belligerent.
End of the day- it is your pool, your space, your rules. Do not apologise, do not accuse..just use simple statements.. It is also your work environment. Support offered. The BIG issues are in some ways are easier to deal with- life/death, divorce, but the everyday niggly ones- can annoy, then obsess, then turn into big issues. Either way- you need to deal with it- for the sake of your recovery, it will be a good way to learn new skills.