I'm planning for my first trip to Europe in June. For the first ten days of my trip, I'll be on an organized tour of Vienna and Salzburg performing in several churches there. Then, I'm planning to spend another 12 days going through Munich, the Luther cities, Berlin, and an long layover in Dublin. Thanks to all of the frequent posters to this forum for helping out with my trip planning so far.
While I know that Rick advocates only taking a carry on bag, I'm not sure that will be practical for this trip, due to needing formal wear for performances, our music, plus all my DSLR camera (photography is one of my main interests while on the leisure part of my trip), normal clothing, purchases in Europe, etc. From what I can tell, it looks like I am allowed one free piece of luggage on American (who I purchased the tickets through), but most of my flights are on other carriers.
My interary includes:
St. Louis to Newark (United)
Newark to Dublin (Aer Lingus)
Dublin to Vienna (Aer Lingus)
Berlin to Dublin (Aer Lingus)
Dublin to Chicago-O'Hare (Aer Lingus)
Chicago to St. Louis (American)
Will I be subject to different policies based on each leg of the flight, or will my American ticket get me through? Sorry if this is super obvious and I'm missing something, but I'd rather plan ahead and pay for additional bags now if needed rather than run into an issue at the airport.