RE: Traveling to Europe!!! and I need help.....
I live in Belgium with my 2 year old. Just to concur with others advice, formula is also sold in a pharmacies, which are closed weekends. You will need a voltage converter AND plug adaptor if you use an electronic bottle warmer from the US in Europe. Bring vinyl bibs for easy washing and drying. Diaper changing stations are rare in Belgium, but more common in Germany; still, be prepared to change your son in his stroller or on the bathroom floor. Bring a big waterproof, padded changing pad. Does your son sit well in a highchair? They are fairly common in restaurants here, but often not super soft or reclining.
Europe is not as stroller/handicapped friendly as the US, so you will be lifting your stroller a lot more, so lightweight is good. BUT you will also be carrying a lot more stuff, spending all day touring with son in stroller, and facing some cobblestone streets, so big air tires, reclining seats, and big baskets are also good, and those can be mutually exclusive with lightweight. You'll have to make your choice, and know that if you choose the opposite, it too would have drawbacks.
I had good success recently planning a morning AND afternoon sightseeing activity with my daughter, but still, modest expectations are best. There can be a pleasure in going slower, not forcing yourself to do more, sitting and watching while baby eats, and watching people interact with your baby. There are rewards to traveling with a child. It's fascinating to see how the universal experience of child-rearing is conducted so very differently in different countries. Enjoy!
Advice and commentary on living overseas
DD1 15, DD2 12, and DS 9