in full vs fully

in full and fully both are adverbs.

Word	Noun	Adjective	Verb	Adverb
in full	No	No	No	Yes
fully	No	No	No	Yes

As adverbs, in full and fully are synonyms defined as:

in full (adverb)	fully (adverb)
referring to a quantity	to the greatest degree or extent; completely or entirely; (`full' in this sense is used as a combining form)
	referring to a quantity
	sufficiently; more than adequately