Trip facilitator from Cuba's capital financing tours (4)
I believe the answer is:
acid
'trip facilitator' is the definition.
(as in an acid trip)
'cuba's capital financing tours' is the wordplay.
'capital' indicates taking the first letters.
'financing' becomes 'aid' (financial aid).
'tours' means one lot of letters goes inside another (tour can mean to go around).
The first letter of 'cubas' is 'c'.
'c' put within 'aid' is 'ACID'.
'from' acts as a link.
(Other definitions for acid that I've seen before include "Sour to the taste" , "Opposite of alkali; sour" , "Sour, sharp-tasting" , "Bitter; biting" , "Hallucinogenic drug" .)