You are allowing yourself to live in a fantasy world--NO ONE can ever guarantee that you will never be hurt again, much less an active alcoholic, living with his parents, who's so self-centered that he can't even change for his own son!
This is NOT a relationship--you've moved away physically--why do you keep allowing him to torture you mentally?? Cut ties with him and all who enable him.
Go somewhere on the 29th that YOU want to visit--not running back to craziness!