Can Anyone provide me with information on their tour of Ancient Rome? Was 4 hours too long?
Also, what about their Vatican Tour? Was it too long?

This question is very hard to answer without more information on YOUR interests. I took their Vatican tour and 4 hours was not too long for me. And, you must realize it is a drop in the bucket when considering how extensive the Vatican collections are & that no tour will cover everything....or even close to everything. What is your level of interest in Vatican art & architecture?

I agree that the answer depends upon your interests. We did not find either tour too long, and even my 11 and 9 year old children enjoyed the tours and were not bored at all.

We did the Ancient Rome tour in October & enjoyed it very much. 4 hours was not too long for us. You will do quite a bit of walking.

Four hours for the Vatical tour was not nearly enough. We spent much of the time in the museum which was wonderful but that left not enough time for St. Peter's.

However, with a nice lunch break, you can return to St. Peter's and explore on your own.