On the other forum for Germany, I posted a question about luggage and traveling. They convinced me that I was taking way too any bags. Each of us, there are 4, were going to each take a large suitcase (28") and a carry on suitcase (21") for a total of 8 pieces. We will be taking the Eurostar from London to Paris and taking an ICE train from Paris to Landsberg, GE. They shared the concern that, especially on the train from Paris to Germany, where there are two connection (one at Stuttgart and one at Munchin-Pasing) that with 8 pieces of luggage for the 4 of us it would be way to cumbersome as well as hard to find a place to store it on the ICE train. Apparently, despite ICE having no restrictions of how much you can bring on, there is very little space to store larger luggage. Additionally, although my parents are in great physical shape, still drives a Corvette, exercise everyday, get down on the floor to play with their great-granddaughter, they are 82 and 84 so it would be hard for them to move as quickly as necessary to grab luggage, get off the train and get to the connecting ICE train.
With all that said, I watched the packing videos that they recommended, and I have looked at the Stuttgart station which is one level, no stairs or escalators, and the second connection is longer so speed is not as much of a factor.
We are not comfortable trying to pack each of us for 12 days in just one 21" carry on as was suggested. But we do realize we have to cut back drastically. So rather than each of us taking a 28 " and a 21" for a total of 8 pieces, we are going to take just 4 pieces (2 per couple).
Long background I know and thank you for continuing to read all of this just to get to my question.
What I want to know is would we be better off, given having to take them on the Eurostar and the ICE trains, taking per couple, one 28" and one 21" (one big and one small) or two 25" (two mediums) for a total of 4 pieces.
I know this might seem like I am overthinking it, and I know I am, but I am just trying to make the best choice I can given the situation and the limitations and issues. I really appreciate your help.