I will be in Rome late May and with Rick's suggestion, plan to visit St. Peter's and the Vatican on a Tuesday. I will be on my own so am flexible schedule wise. At that time of year is it better to go earlier or later - lesser of two evils - I know it is always crowded...
I will be in Rome a full 10 days (with one day to Tivoli, Hadrian's Villa) so will have time to walk, explore and rest!
7:00am St. Peter's I have heard that it is lovely in the early morning, few people. Would I need to arrive by 6:45pm for bag check
9:00am Museum walk over from St. Peter's by 8:45 to get in line for 9:00am appt
Pizzarium for lunch
maybe walk back on Trastevere side (if it is an interesting walk) and walk up Gianicolo Hill then on to my hotel near the Pantheon - it is about 3 1/2 miles
or
1:00pm St. Peter's arrive by 12:30pm for bag check
3:00pm Museum arrive by 2:45pm
Pizzarium
walk back through more central Rome to hotel near the Pantheon
Thanks much,
Sharon