Oh my gosh, my euro trip is next month na! Thanks for all your help, ladies
My almost finalized itinerary is as follows: (I don't have any tickets yet for the Paris leg of our trip, so comments are welcome! there's still a bit of time and wiggle room to improve but I bought most of the tickets already)
Day 1 - arrive in Rome noon; go see Spanish steps, Trevi, Pantheon and then eat at the Jewish Ghetto
Day 2 - food tour in the AM; wander around Trastevere area then dinner there
Day 3 - St. Peter's Basilica, Scavi tour, Vatican Garden, Castel S'ant Angelo
Day 4 - Pompeii and Vesuvius whole day tour
Day 5 - Colosseum, Palantine Hill, Roman Forum area
Day 6 - depart Rome AM; arrive in Florence go around;
might go to the Duomo (worth it ba?)Day 7 - Accademia and Uffizi museums and going around town
Day 8 - Carrara marble quarry, Pisa and Lucca tour
Day 9 - San Gimignano, Siena and Monteriggioni tour
Day 10 - Depart Florence after lunch; arrive in Venice
Day 11 - St. Mark's Basilica, Doge's secret itineraries tour, Grand Canal vaporetto
Day 12 -
is there time to go to Murano or Burano? Need to be at the airport by 3PM; arrive in Lyon PM
Day 13 - HOHO bus tour - Lyon
Day 14 - HOHO bus tour - Lyon
Day 15 - Depart Lyon early AM; check-in in Paris then immediately depart for Versailles (didn't want to do this super hectic but the fountains only play during weekends

)
Day 16 - HOHO bus tour (to familiarize ourselves with the area); Eiffel Tower, Arc de Triomphe, etc.
Day 17 - HOHO bus tour
(is this still needed?) Orsay and Seine river cruise
Day 18 - Louvre AM and Montmartre PM walking tour
Day 19 - Latin Quarter AM and Marais PM; Orsay (if not done on Day 4 - late closing time)
Day 20 - Whatever we still want to see, eat or buy
(any suggestions?)Day 21 - Depart Paris AM
Thanks for reading!
