Okay...I did a Princess cruise to Europe (Crown Princess to the Baltic) in 2001...But we booked our own air...We're letting Celebrity handle it this time for the Mediterranean...However, I do feel pretty comfortable in answering your questions...
First, you should be able to check your bags all the way through to Barcelona...I do not recall whether or not we checked ours right through to Copenhagen ...we flew American LAX to JFK then switched to Sabena to Brussels then on to Copenhagen...it seems that we may have had to retrieve them in JFK...BUT, my daughter flies out in a few days for a class in Greece and is flying American to London, then British Airways London to Athens...And I just called them yesterday to ask if it were possible for her to check her bags straight through to Athens and they said yes...just let them see both tickets when she checks in...
I believe on only clears customs once now when entering a European Union country...in any event, it was completely painless...
Yes, when you purchase air through any of the crtuise lines, they also include your transfer from the plane to the ship...
BTW, it really sounds like you got the short end on the plane routing...FOUR legs? And by way of Munich only to backtrack to Barcelona???
Wow!!
Celebrity has us going entirely on one airline (Delta)...with only two legs in each direction: LA to NYC, NYC to Venice and Barcelona to Atlanta, Atlanta to LA...2 hour 40 minute stop in JFK on the way over , 2 hour stop in Atlanta on our way back...
How long are your layovers in each airport?