I haven't had much to add so far, it sounds like you're doing just fine.
About the bottle in the trash. I wouldn't necessarily presume that that came from any particular drinking episode. I used to throw out my bottles at discreet times. Heck, if it was obvious I was drinking, I'd have some empties, right? So I'd throw out a "decoy" and secretly dump the other three or four someplace else.
We alcoholics are nothing if not creative!