Awful ordeal for party in place of great wealth
I believe the answer is:
'place of great wealth' is the definition.
(I've seen this before)
'awful ordeal for party' is the wordplay.
'awful' is an anagram indicator.
'for' says to put letters next to each other.
'party' becomes 'do' (do is a kind of party).
'ordeal' anagrammed gives 'eldora'.
'in' acts as a link.
(Other definitions for el dorado that I've seen before include "One who can't give something up" , "Golden land imagined by the Spanish explorers of America" , "Place where easy money may be made (after the conquistadors' folly)" , "Supposed city of riches" , "Land of great wealth" .)