Visa left at sea celebration (8)
I believe the answer is:
festival
'celebration' is the definition.
(I know that festival is a type of celebration)
'visa left at sea' is the wordplay.
'at sea' indicates an anagram.
'visa'+'left'='visaleft'
'visaleft' is an anagram of 'FESTIVAL'.
(Other definitions for festival that I've seen before include "Period for feasting and celebration" , "Celebration, religious or artistic" , "Day or time of celebration" , "Joyful celebration" , "Celebratory period" .)