An article like this probably gets published every modern Olympics, but this version had a couple of details I don't recall reading before:
...competing in the games could be dangerous.
Lucius Annaeus Seneca (c. 50 BC-c. 40 AD) describes how a father lost both sons in the “pancration”, a type of combat sport that was a violent mixture of boxing and wrestling:
A man trained his two sons as pancratists, and presented them to compete at the Olympic games. They were paired off to fight each other. The youths were both killed together and had divine honours decreed to them.
Gee - I wonder if the father ever got over that, or if he was satisfied with the "divine honours".
Also, venue facilities were not great for a long time:
As the contest was held in the middle of summer, it was usually extremely hot. According to Claudius Aelian, some people thought watching the Olympics under “the baking heat of the sun” was a “much more severe penalty” than having to do manual labour such as grinding grain.
The site at Olympia also had problems with freshwater supply. According to the writer Lucian of Samosata (2nd century AD), visitors to the games sometimes died of thirst. This problem was fixed when Herodes Atticus built an aqueduct to the site in the middle of the 2nd century AD.
And I didn't know "the famous story" about Plato attending:
There is a famous story about what happened when the philosopher Plato (428/427-348/347 BC) stayed at Olympia for the games.
Plato lived there with others who did not realise he was the celebrated philosopher and he made a good impression on them, as the Roman writer Claudius Aelian (2nd/3rd century AD) recalled:
The strangers were delighted by their chance encounter […] he had behaved towards them with modesty and simplicity and had proved himself able to win the confidence of anyone in his company.
Later on, Plato invited his new friends to Athens and they were amazed to find out he was in fact the famous philosopher who was the student of Socrates.
It’s unclear how many people actually visited the ancient games each time they were held, although some modern scholars think the number could have been as high as 50,000 in some years.
Of course, there is also the minor point that it was a (nearly) all male audience watching male athletes compete in the nude, which I mainly find amusing by imagining how MAGA would deal with that scenario today.