We would like to tour the collesium including the underground. Better to book educational tour at collesium website or book a tour with tour company? Our time frame is 10/30 to 11/4.
It’s your call. We did a tour company and really enjoyed it, but when we went there wasn’t a comparable option available directly for night time.
Recent thread about Underground tours at Colosseum
Make sure you are on the official site and use correct spelling
https://community.ricksteves.com/travel-forum/italy/visiting-the-colosseum-in-rome