Goes ahead and gets the tickets (6)
I believe the answer is:
passes
'tickets' is the definition.
(pass is a kind of ticket)
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for passes that I've seen before include "goes beyond" , "Routes through mountains" , "'Men seldom make . . . at girls who wear glasses'" , "Achieves the required standard in a test" , "Dies, euphemistically" .)