Start well
Treat the Colosseum, Roman Forum, Vatican museums and other sites as separate admissions unless your actual ticket states otherwise. Plan around named entrances and time slots.
This pocket companion concentrates on reading the Colosseum, with a separate Pantheon comparison. It is not a single walking or admission route across Rome.
A visit that fits
Confirm the precise levels and areas included in your ticket, lift arrangements and any step-free route. Special-access areas may need distinct booking.
If a special-access ticket is unavailable, the standard public experience can still answer the questions about arena, audience and architecture. Do not buy an unsuitable itinerary merely to tick a particular level.