Have a share in it per capita in resort (11)
I believe the answer is:
participate
'have a share in' is the definition.
'it per capita in resort' is the wordplay.
'in resort' is an anagram indicator.
'it'+'per'+'capita'='itpercapita'
'itpercapita' anagrammed gives 'PARTICIPATE'.
(Other definitions for participate that I've seen before include "Join in" , "Be involved (in)" , "Contribute" , "Take part (in activity)" .)