For me, Armenian, hands down, especial the giving the gold part. Second would be Ugandan, then Cuban, then Polish.
The one most memorable ethnic wedding I've ever had was at the Desmond-American in Albany two decades ago. The bride was white, Greek, and Jewish. The groom was black, Panamanian, and Catholic. After playing one kalamatianos and salsa, and American tune, it was evident neither side was familiar with the other sides native dances. My fourth song was a hasapika and I DEMANDED (capitol letters to indicate strong strong repetitive urging) that no Greek should be holding another Greek's hand and that there had better be a Panamanian in training between each. Well, my friends, it worked perfectly. Then, the next track was a meringue and the same held for the Panamanians to grab a Greek. It worked.
Now everybody was into each others dancing and I played maybe 10 traditional songs all night. The rest was ethnic and the floor was absolutely packed. I thank my lucky stars I know ethnic music (and their dances) because without that knowledge, it would've been a long night for the guests in lesser hands.