We are two non-european adults over the age of 30 spending 4 days between the 10th and the 14th of Aug 2014 in Rome, Italy. Given our nationalities and age, we are probably not eligible for any free entry in the museums and historical sites in Rome.
What tickets (museum entry and public transport) should we and can we buy online to circumvent lines? I know from experience that just buying tickets online doesn't help. After that one would need to find a pick-up point for tickets which may not always be near the place of interest or be closed!
Is it worth investing in the 2/4 day Roma pass? Should we be worried about closures of sites on Sundays or Mondays? We are going to stay about 100 meters from the Colosseum, in case this information is pertinent.
Edit:
I just realized that asking "is it even possible" can be quite subjective. So I would like add: Is it even possible? If so, what "timing", "advanced purchases" and "circumstances" may we use to avoid long ticket lines?