jamboree

US /ˌdʒæm.bəˈriː/
UK /ˌdʒæm.bəˈriː/
1.

buổi họp mặt

a large organized event that many people go to, or a busy, noisy occasion or period:

:
The beer festival was a huge open-air jamboree with music, stalls and everyone enjoying themselves.