Embarkation was awful - they encourage you to do everything on the web site but then you get to the port and find yourself on line with a thousand other people who haven't completed all the info on the web site. Why bother doing that if the end result is waiting on line with people who are having passport issues, visa issues, credit card issues, etc.
We purchased our tours through Carnival and will never do that again. The tours were crowded, disorganized and offered little value for the money that Carnival charges for them. Our St. Petersburg and Berlin tours were a mess. Our St. Petersburg tour guide became unglued by the size of our group, and apparently didn't want to do a tour of the Hermitage - after waiting for 20 minutes on the entrance queue, she decided a rest room stop was a good idea in spite of the huge lines in front of the rest rooms. We lost a half hour waiting for everyone. So after nearly an hour, we hadn't seen anything in the museum. She decided not to bring us to the impressionist portion of the tour because the museum was crowded. After 20 minutes in the museum, we did one more rest stop and headed back to the ship. We got a tour of the area surrounding the rest rooms for $79.00 a person. A total rip off.
Our Berlin tour was another fiasco. The information desk told us they'd start calling everyone for the "Berlin Top 10 Tour" at around 7:00 AM. What time did they actually call us - 6:30 AM! We literally flew out of our state room only to stand on line for 45 minutes. And as with most of the Carnival tours, we walked around the Holocaust Memorial and the Reichstag but couldn't go in and actually visit these historical places because we had spend 90 minutes walking around the shopping district. Sorry Carnival, I CAN GO SHOPPING ANYWHERE. They're so intent on making sure people shop, they must have some kind of deal. We didn't need to travel 7,000 miles to Berlin to shop. On our return to the ship, the lines getting back on were crazy and no one was directing passengers on where to go. After nearly a 14 hour day, people are tired and hungry. You would think Carnival would understand that. For this privilege we paid $159 a person.