To get into the Colosseum faster, this is the way to go. However, be aware this doesn't completely "skip-the-line", it doesn't take you past all the people waiting to the an immediate entry. It does move you much further than waiting in the regular line. I'd say it took us close to an hour to get in, as opposed to probably 3 hours.

We enjoyed seeing the Coleseum and our guides were very informative and kind! However, since we waited for people who were late in our group who never showed up and since there wasn’t an anticipation of the attractions being busier than usual around the holidays and we had very limited time at the palatine hill/Roman forum - we almost didn’t get in. It would be best to book an earlier morning tour! Ours was at 1300

With all respect, the expensive „skip the line“ ticket is a bit of a bad joke. Booked for 10am. The Tour in the Colosseum eventually started at 11am. We waited everywhere. 3 stars for that. What pulled it off was our four guide called Marta (without „h“) who was super friendly and professional. 5 stars!