Hello, I'm an American ex-pat, resident in Milan since 1990. My wife's Italian and I have a valid Italian permit of stay for family reasons. At the end of July we're flying to Boston and visiting until the 18th of August. My US passport expires on 1 October and my intention was to renew it as soon as I returned to Milan. Reading the various info on the net about 90-day rules etc. has caused me concern. Will I be alright travelling on my current passport? Thanks.