Fares per person start at €121 on Costa Smeralda and €141 on Costa Serena. Costa Smeralda is the bigger ship, carrying 5,224 guests to 3,014. Costa Serena has the fewest guests per crew member, at 2.7 to 1. Costa Smeralda is newer, built in 2019 against 2007, though Costa Serena was refurbished in 2025. Costa Serena runs 1–61 night cruises from Marseille and Buenos Aires, plus 19 other ports, while Costa Smeralda runs 2–17 night cruises from Santa Cruz de Tenerife and Las Palmas de Gran Canaria, plus 7 other ports.