Ok, so if you look at the recommended packing list for the 14 night Transatlantic cruise, which we are taking in May, and packed most of what is shown our luggage would weigh about 500 lbs!!!!!

My DH and I have been on cruise's (7 nights) before and he even works for another cruise line as the Cheif Security Officer, but really? Do we really need to pack all of that stuff??? I guess that it's better to be prepared for anything, but just worried about how much our luggage will cost when we fly out of Barcelona back to South Florida? Any tips would be GREAT!!!! Thanks in advance!!!

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OK - I did the WBTA last year with 2 adults, a 13 year old and a 7 year old princess-diva. We also did 2 days in Barcelona before we sailed. We were limited to 50 pounds checked and a carry one bag each. Before I tell you how much of that I used, let me also say that I brought FE gifts for 20 cabins (and they included laundry detergent and magnets...), candy for 40 cabins and a fairly heavy gift for the scavenger hunt winner, about 20 Cruise T-Shirts that we had made (in addition to the 6 for us!) and special gifts for special DIS friends! All the special stuff was a full checked bag and then some.
I set off to pack 7 days of clothes for each of us. 18 days of travel, 7 days of clothing - I thought I was good... Then may daughter saw that she only had 7 dresses and that just wouldn't do. OK, her stuff is small, I will bring a few more dresses... Well at the end of the packing we were at 7 - 9 day sets of clothing for 3 of the 4 of us, 12 day sets for my daughter (who was finally convinced that what she wore on the plane would NOT be recognized by others). 8 or so sets of evening wear for DH and DS, and 9 for me because I was bringing dresses that weighed next to nothing, plus a formal gown. And, for my daughter? Yep 14 dresses. Don't ask about shoes - we did very well. We each had flips, dress shoes - 1 for the guys, 2 for us gals and then the shoes we traveled in (tennies/trainers).
We filled 4 suitcases to check only one hit 50 lbs - and not an ounce over (and we had room in all of the others, so it wasn't a big deal). Our carry on bags were full - but not stuffed.
We did laundry. DH was a pro at it. It centered around sunrises, and was started on day 2 of the cruise I think and then it was on hold for a bit, but at day 9 or so it was a big day - 3 loads maybe. and we then did a load every other day.
Lesson learned - Mom will wear her outfits - she plans well (ask anyone I cruised with - or check out last years WBTA thread - I did FE, Tastings, T-Shirt orders...) Dad also plans well and will wear what he brings. DS will live in shorts, swim trunks and t-shirts, and only needed 2 pairs of long pants. DD will wear every dress and swim suit, but only her favorite 2 outfits - and she will wear them over and over and over...
We did buy stuff on the trip, but since I had 1.5 suitcases of FE gifts, t shirts, etc. we had plenty of room. We got a couple of lovely tote bags as FE gifts, and those held the FE gifts that we didn't pack. All of the candy was sorted. My kids kept some but the very vast majority (I think everyone left us a gift or candy - even if we were not on their list) of the candy was given to the entertainment and Concierge staff and our favorite 2 Mousekeepers - Maricar and Marilou for taking such great care of us! And, since we were renting a car to get back to Atlanta, I didn't have to worry about luggage getting off.
In a nutshell, we were 2 checked bags - as big as you can check without paying fees, 2 mid size checked bags, 3 small roll a boards, a pac-safe back pack full of camera gear and my Mickey laptop bag.
My one piece of advice... buy a luggage scale. Get a good one and test its accuracy. Then make your list, pack, zip and weigh. Remove, shuffle etc. Don't leave home with a bag that weighs in at over 45 pounds.
Happy packing and have a great trip!!