Gladiator fights was the main entertainment that they had back then. But gladiator fights were rigged, usually. What I mean by that is they usually put in a criminal ("to fight for their life") and that person didn't have fighting experience. But sometimes they(the kings) lightly armored the fighter ,but the gladiator were always heavily armed them.
The Romans had festivals to celebrate a victory in battle. They also threw festivals to honor people who did a great service to Rome. The Romans had poverty at times so when times were like that they abandoned their children because the couldn't take care of them.
Back when their was a roman empire the roman's went to the Colosseum to be entertained. Some reasons why they went their was to see a reenactment of a battle or to see a horse race. What people do when they go to the roman Colosseum is they walk around the Colosseum. But the people spend most of their time in the underground rooms and animal containment areas.