Cherry, he obviously meant some dancing from the simcha of kabolas htorah in addition to a hartzig lively davening. As opposed to a tired mumbled one. I would suggest a Yeshivishe or Chasidishe minyan. I don’t live in Flatbush but I’m sure there are plenty.
Actually, if you read the biography of the Chofetz Chaim (available in English and Hebrew), authoritatively written by Rabbi Yoshor, it clearly says that there was lively dancing in Yeshivas Radin on Shavuos.
That is what I am looking for. Not a carlbach davening, but a heartzige baal tefillah, with some nice dancing at the end of Yom Tov would be perfect (not like the perfunctory 3 minutes in some shuls).