Who: Daniel, Boyd, and then Vlad.
EDIT: NOW OPEN for reactions from the building, since he's making a goddamn ruckus as they leave. Just make a new comment if you've got a reaction. ;)
What: Alcoholism = bad, friends.
Where: R1, to begin with.
When: No more than 72 hours or so after Daniel wakes up post-home-op.
Warnings: Withdrawal symptoms, which aren't pretty, and related panicky things, which may be trigger-y for some people, so consider yourself warned.
( In which bad times get much worse before they can get better. )