Yes, it's listed as included:
"All tours and admissions — at no extra cost — covering at least 15 group sightseeing events • Ancient Rome walking tour • Colosseum • Roman Forum • Pantheon • Evening walk through Rome including Trevi Fountain • Vatican Museums and Sistine Chapel • Volterra walking tour • Guarnacci Etruscan Museum • Alabaster workshop • Wine tasting • Lucca walking tour • Orientation for "vacation" day in the Cinque Terre • Renaissance Florence walking tour • Florence's Accademia (Michelangelo's David) • Uffizi Gallery…and more"
You'll actually go in to all the venues listed here and your admission is covered. You'll have a local guide for the Colosseum and Forum (take water, wear a sun hat as there is very little shade in the Forum).
If you are getting there early (GOOD idea!) there is plenty to do without doing the Colosseum/Forum. I will admit that I HAD to walk over there just to see it from the outside. Yes, it looks just like it does in pictures. Jaw-dropping. It looks like the schedule is still the same as when I did it in 2013 where you check out of the hotel, load luggage onto the bus and head for the Colosseum/forum visit, then head out of town after that.
Here's what Rick recommends pre-tour:
"Here are a few suggestions for sightseeing that we do not do as a group: Borghese Gallery (reservations mandatory, closed Mondays), Spanish Steps, Capitoline Museums, Santa Maria Maggiore, Castel Sant'Angelo, Capuchin Crypt, Ancient Appian Way (great for biking), and catacombs. Most museums are closed on Mondays. Confirm your sightseeing plans with any tourist information office. If you are interested in seeing the pope, you may want to attend the Sunday blessing. You can check the pope's schedule in advance."
I really enjoyed doing the Basilica San Clemente which has several layers of church and holy sites underneath the current church including a Temple of Mythras at the lowest level. Very interesting! On another tour in Rome I did the Capitoline Museum which I liked very much.
I hope you enjoy this tour. It was my first one and unfortunately it got me hooked, hahaha!!