Can I use my iphone 5 only for internet on hotel wifi in itAly

I want to travel to Italy and NOT use my phone to call, but my hotel offers free wifi, so can I disable the phone and use the internet and email for free? I know If I brought my iPad I can, but it is about room in the luggage. I heard if I put it on airplane mode and turned off the push notifications I can, but I don't want to be charged roaming fees. Also can I text from iPhone to iPhone free from Italy to canada?

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