I'm about to do the same thing, Kelly, only I'm not going to Germany.
Here's what I've done. I packed everything I needed for about 10-12 new projects. I put all the materials for each in a small bag, and all the bags in a larger box that can travel with me. Now, if I have time (and I think I will), my projects are already organized and ready to go. If I have to buy a few supplies while I'm away from home, I can easily do that.
I've made a lot of new items ahead of time. I'm doing a big photo shoot this weekend of 30 new items, and will have those to add every other day when I'm gone...so it looks like I'm still open and active.
Finally, what I'm planning to do is NOT go on vacation mode but to post an announcement that I'm traveling and won't have my usual reliable computer access so please allow an extra day or two for me to respond to orders. Or something in the vein.
I'm leaving Tuesday so most of this is now done, but you have time to plan your projects, assemble your materials and photograph ahead of time. It looks to me like you can pull this off without a hitch. Just be sure to leave a note that you'll respond to people as quickly as you can, depending on your access to a computer.
And, yes, I'm probably going to buy a laptop for trips like these. Think about that too!
Oh! And, most important, have a great trip and lots of fun!