Two days is nothing. It also sounds like you won’t have much time to study either. You’re also at a disadvantage as you won’t have some form of internet, computer and smart phone access. If you insist on bringing something, then the print outs sounds like a good idea.

Last month I had to go almost three weeks without studying due to various things going on in real life. When I finally got back to studying, the motivation and passion was still there. I was determined to make up for lost time. It took me a day or two to get back into the routine of studying, but now I’m fine. I don’t take the breaking the chain concept seriously. If you were going to be away for longer that would be a different issue, but missing out on two days won’t affect you at all. If you love studying Japanese no minor setback will affect you.