I always look forward to come to Olives when I come to Vegas. It is somewhere you definitely need to make reservations or else you prob gonna have to wait. I never tried it for dinner but lunch is good and inexpensive.
Service is usually good. They usually have lunch specials and I usually get that but i guess it depends on what pasta lunch special they have. Their pastas are really good because it's hand toss/house made. I also really recommend sharing a beef capraccio with a friend which is SUPER GOOD. There are like stuffing inside the middle of the plate and kind of a salad. I don't really like the stuffing but besides that It is super good.
I recommend anybody coming here for lunch(never tried dinner) when they're in vegas.