Pro-tip for Rome: if anyone tries to sell you a "queue dodging ticket" (around Vatican City, for example) don't buy it, it's a scam. General rules for pickpocket precautions apply when taking the subway (anywhere) or when visiting the more touristic locales. You probably shouldn't pack to capacity, unless you know 100% you won't buy anything you'll want to take back home.
On language: you guys picked three Romance countries, so you're going to have an awkward time at best. You should be ok around tourist attractions, but don't expect people to be able to reply in English if you venture off the beaten path.
Other than that, have fun, you picked some amazing places to visit.
On language: you guys picked three Romance countries, so you're going to have an awkward time at best. You should be ok around tourist attractions, but don't expect people to be able to reply in English if you venture off the beaten path.
Other than that, have fun, you picked some amazing places to visit.