I think you mean Greek Olympians. They wore nothing (completely nude).
They competed naked.
The 12 Olympians were the main cornerstone of the ancient greek religion, and stories about them struck fear and a need to impress them upon the greek people.
grapes
According to ancient Greek mythology, Hades was the third brother among the Olympians. He ruled the underworld and the dead.
Went home disappointed.
The Olympians ate ambrosia and drank nectar, according to Greek mythology. My guess as to the reason they do is because both are quite sweet in flavor.
They believed in Greek mythology, more importantly greek Olympians and their stories of heroes and monsters.
greek olympians are the 12 greek gods and godesses
Ancient Olympians did not get medals. Only the winner got a prize, an olive wreath. At home, however, his victory would be handsomely rewarded with sums of money and/or gifts of goods, such as valuable vats of olive oil.
grapes
No offense, but you may as well ask if God is real. The thing we know as Greek mythology was basically ancient greek religion.