Hi again.
Just read a couple of your other posts.
If a visit to the Aqua ducts is what you really want to see, you may have to slice off a few minutes here and there from other attractions.
Of course keep in mind - time out for your lunch or snack breaks.
On another note, I am still struggling with the best way to get around. The bus seems like a nightmare. I am assuming there are cabs that can take a group of 6 of us?
Official Roma taxis can maybe hold 4 adults comfortably - 1 in the front seat and 3 in the back.
I never took a Rome cab so I'm only speaking from what I would see while walking. If you do take a taxi, be very careful to only ride in an official city cab. https://www.romewise.com < lots of useful info from her. She's lived in Rome for about 20 years.
City buses are ok. Cost about 1,50β¬ (with a transfer) one way.
Tickets can be bought at Tabacchi shops, small cafes, and some gift stores. Bus drivers have no tickets or euro change. Most drivers speak a little English - some more than others.
They are a timed ticket (75 or 100 min) I can't remember, but it does state it on the ticket.
You must validate your single BIT ticket once you are on the bus. There are visual instructions on those stamp machines.
[BIT tickets are also good for a one-time ride on the metro.]
Uniformed inspectors will stop a bus at random to check validated and time-limited tickets/passes.
Buses 40 and 64 are the most popular; therefore being the most crowded and the most vulnerable.
Nothing to be really frightened of.
If you do take a city bus, put your bag and any valuables (camera, etc) in front of you and keep your hand on it, and you will be okay.
Bottom-line -- always keep aware no matter where you go. (I'm sure you know this: keep No valuables in your pockets. Even if you don't take a bus - standing at an attraction or in line somewhere, peeps may "tip toe" into your pockets looking for wallets/loose money/phones/ etc.
I took the bus quite a few times, and never had an issue.
Well, lol, except for my first time to Rome -- I got on the wrong bus and had a tour of the outskirts of Rome! I enjoyed the ride to and from. I did not have any time constraints, so it was okay, ha.
Buses 40 and 64 run frequently. If one is too crowded, you can always wait for the next one coming along within 7-10 minutes; depending on time of day.
Since you have limited days in Rome, you will probably opt for the Rome taxi to get you swiftly to and from.
Driver can drop you off as close to an attraction as they can - zoning limits. Same goes for buses of course.
*In case you are not aware, you may encounter some beggars in the area of the Vatican and Saint Peter's.
They are not harmful or aggressive. They shake their little cup of change and circle around people. They move on.
Be mindful of the bracelet vendors.
It may be totally different now with the limitations from covid -- in the past, "certain vendors" would try to strongly encourage people; especially girls and women to take or try on a bracelet made from string - don't comply.
They will demand euro for that bracelet.
*edited to add