Travel light, take plenty of film. Virtually all tourist spots, expect to hear "no treppiede" every time you get a tripod out (unavoidable with slow film and large format).

One odd ball places to visit is the church of Santa Maria della Concezione dei Cappuccini on the Via Veneto - Go in to the crypt (small door to the left of the church) and marvel at the creative art. No photos allowed, so make do with a postcard.