Loving the recent Trip reports, so much info, thank you for posting. I decided to start my own question thread to keep track of info

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I'll probally have more questions as I go along
When I go to Europe, Rick Steves is my go to guidebook. I have not been disappointed in hotel, restaurant and attraction advice.
1) Where to Stay: we stayed at a hotel on La Rambles - don't remember the name - it was in Rick Steves BCN tour book.
Airport to Hotel: we've taken the Subway, train, bus, taxi and tour transfers. The buses between the airport and Placa Catalyuna are frequent and easy to use, if somewhat slow. Train / Subway has worked well, except for the time we were there and they had just reorganized the metro routes (how do you do that

with all of those tunnels?)
Hotel to Port: when we stayed on la Rambla, we just walked down to the foot of la Rambla and across the street from the Columbus Monument, there was a bus that took us to the port. Otherwise we have had transfers from the hotel to the port through the tour group
Flying in the day (or 2) before is a GREAT Idea. I would NOT do it any other way - flying has to many risks of delay!! And a day or two in BCN is interesting. An you will be able to get acclimatized to the new time zone (shake off that jet lag). Depending upon where you are flying to and how much you are willing to spend, staying in BCN on disembarkation day is a good plan - more options for flights home this way
2) IMHO - Going to Europe, and then just spending a few hours in each port is a missed opportunity! On the other hand, the med cruises are port intensive and it's hot and humid and that can wear you down, so I do understand.
Here's some of the things we did ...
In Europe (except for Greece - was there on a national holiday w/ limited services) we have gone off on our own. Rick Steves again as my guide, helping me make plans. Sometimes we had joined a "walking tour group" (St. Peters / Vatican, Colosseum, Roman Forum) to get more information, and to skip some lines. With Rome you have at least an hour travel between the port and Rome (we walked from the port to the train station and got tickets for the train, metro and buses for about 10 euros each vs. paying
DCL $100 per person to bus us to Rome and drop us off). Again Rick Steves cruising book along with the appropriate City / Country book is invaluable in helping you make your plans.
Rome: Wasn't built in a day, and you can't see it in one either. If you really want to see St Peters / Vatican AND Ancient Rome - you will need a tour of some sort, either DCL or a local tour operator.
Naples: we went to Pompeii (hooked up with a tour guide while we were in line to get in - and he was awesome), then the National Museum (to see what they pulled out of Pompeii), had Pizza Magharetta and walked back to the ship - it was a pretty full day.
Pisa: skip it at go to Cinque Terra instead. Pisa is a "must see" because we've heard about it our entire lives, but for us Italy had so much more interesting places. We did walk to the train station, went to Pisa, bused from the train station to the field of miracles.
Florence: it's a long drive to there and back again, and therefor your time is limited. After spending 3+ days there on our own, I know that I would have missed so much. David is Awesome (and I'm fascinated by "The Prisoners"), the Ufizi is HUGE (having a guide helps - a lot), the Duomo / Baptistery / Gate of Paradise, the other cathedral (Santa Maria del Fiore), Ponte Vecchio, Piazza della Signoria, etc). Yep Florence is as awesome as Rome!
3) the
Disney Cruise Experience: We enjoy the main stage shows, the "inbetween" shows (inbetween your dinner seating and main show time), the Adults only late night shows, the Main Dinning Rooms, Palo for Brunch and dinner. With the long port days I don't think that there will be a lot of onboard activities going on while in port, but the sea days are another story.
4) we are not drinkers either, but will enjoy an adult beverage from time to time. To me they do NOT seem to expensive. I've been to restaurants at home (Pacific NW) where drinks are noticeably more expensive.
5) Tipping: Just Do It. DCL will automatically charge you for the standard gratuities for each of the 4 tipped positions on the ship (Head Server (manager), Server, Assistant Server and Room Steward). You can give more (or less) if you want to. Guest services can help, or you can just add cash in the tip envelope). Tipping takes place at the END of the cruise. You do NOT have to tip for each meal - if everyone tips as they should, all servers are compensated as they should be. The dinning room serving teams work Breakfast, Lunch, Dinner, fast food, etc. Just tip at the end of the cruise. If you partake of adult beverages or other beverages that carry a charge, you will have to sign a slip for those and a gratuity is ALREADY INCLUDED, so you don't have to tip additional unless you want to.