We are a family of 6 (2 adults and children will be: 14, 11, 4, and 2) going to Germany and Northern Italy for two weeks in December. We will be renting a van for the first 9 days and then switching to a train. Except for our first and last nights, all of our stays will be 2 nights our longer. We will have access to a washer about half way through. We will have 2 car seats to carry with us for the younger two- and we are bringing a back-pack to carry the 2 year old in instead of a stroller (she won't stay in strollers and loves the back-pack.)
I don't think I will successfully be able to limit us to carry-on luggage only. I'd like to bring large bottles of shampoo and conditioner as well as body wash and lotion (we have 4 females!) I'm sure we'll also bring a lot back as souvenirs (mostly food, I am sure). I'll try to keep us all to 3-4 pairs of pants/jeans and 4 or so tops.
Looking for advice on a combination of check-in/carry-on luggage. The older two kids can pull their own luggage. Any thoughts would be appreciated!