a big send-off
A lively and enthusiastic farewell celebration thrown in honor of someone who is leaving some place and/or setting off on a new endeavor. The night before I flew back to America, the entire town came out to give me a big send-off at the local pub.
*big send-off
a happy celebration before departing. (*Typically: get ~; have ~; give someone ~.) I had a wonderful send-off before I left. John got a fine send-off as he left for Europe.