Servant attending queen, maybe in ceremony (7)
I believe the answer is:
pageant
'ceremony' is the definition.
(thesaurus)
'servant attending queen maybe' is the wordplay.
'servant' becomes 'page' (I've seen this before).
'attending' says to put letters next to each other.
'queen maybe' becomes 'ant' (queen is a type of ant).
'page'+'ant'='PAGEANT'
'in' acts as a link.
(Other definitions for pageant that I've seen before include "Spectacular display" , "Colourful procession" , "entertaining spectacle" , "Magnificent parade" , "Show" .)