If you make an Oceania account, include your phone number on your profile, and "start" to book the cruise, I guarantee someone will call you within an hour. 🙂
There is a train from the main Gare in Monaco to the main Gare in Nice that runs about every 30 minutes. It takes 22 minutes to get there.
https://www.rome2rio.com/map/Monaco/Nice
I love to use this website; it will tell you how to get anywhere and is great for using public transport.
Cindy
We are going on this cruise in 2024, also newbies to Oceania. Thanks for your review!! I am a little concerned about how I am supposed to pack for the Amazon, Antartica, and a nice dining room.... did you find this cruise to be formal in the evening, or were people a little more relaxed?