we’d always wanted to stand inside the Flavian Amphitheater ... is it even worth visiting the Colosseum when you go to Rome?

Inside the ancient ... There isn't a dress code for the Colosseum, so plan to simply wear comfortable, seasonally appropriate attire (and know that summers in Rome can be extremely hot).

Colosseum: Rome's Arena of Death aka Colosseum: A Gladiator's Story is a 2003 BBC Television docudrama which tells the true story of Verus a gladiator who fought at the Colosseum in Rome.