so in the hobbit when offered a cup of chamomile tea by dori, gandalf instead asks for wine; but when offered a glass of ‘the old winyards’ by bilbo in lotr, gandalf instead asks for tea. from this we can draw one of two conclusions:
a: hanging around thorin oakenshield was enough to turn gandalf to drink
or
b: getting to know a recklessly be-tooked bilbo baggins was enough to make gandalf reconsider his life and realise he needed to be the sensible and sober one
c: gandalf just likes to be contrary and will never accept whatever is specifically offered
It is 7000% option C.
C. Absolutely.