XFed, Here's what you do: Get some snacks in your room, have a glass of wine & some cheese at, say, 5 pm. Then take a nap from 6-8:30 and then head out to dinner.
That way you'll have the energy to stay up late and eat a nice, long, luxurious dinner which (because you're eating slowly) you can digest, even 'tho it's late.
Rome's a fabulous city with terrific food and fantastic people. Watch what others do... and don't just try to experience America in someone else's country. That's where the expression, "Ugly American" comes from. You'll never experience the generosity and love of the Italians if you just hold onto your normal sphere of experiences.
Good luck. Rita