So often dry in resort — and that’s that! (3,2,5)
I believe the answer is:
end of story
'that's that' is the definition.
(I've seen this before)
'so often dry in resort' is the wordplay.
'in resort' is an anagram indicator.
'so'+'often'+'dry'='sooftendry'
'sooftendry' is an anagram of 'END OF STORY'.
'and' is the link.
(Other definitions for end of story that I've seen before include "That's that" , "period" , "When I close book" , "I won't reopen it" .)