As a U.S. passport holder, you can visit Italy without a visa for up to 90 days. However, please ensure that your passport is valid for at least six months beyond your planned date of departure from Italy, and it's always a good idea to check for any updated travel requirements before your trip. Visit the following link for more details: https://travel.state.gov/content/travel/en/international-travel/International-Travel-Country-Information-Pages/Italy.html
We plan to provide a bus service from the Vomero district to the wedding venue, and more details about this service will be shared with you soon. Alternatively, you can reach the location by taxi or rental car.
In October, Bacoli typically experiences pleasant weather with daytime temperatures in the 70s Fahrenheit (20s Celsius) and evening temperatures in the mid-60s Fahrenheit (around 18-19 Celsius). This makes it a delightful time for an outdoor wedding, but it's recommended to check the weather forecast closer to your wedding date for more specific conditions.