Whether you should check in early or late depends on your priority: maximizing vacation time or avoiding crowds. Checking in early (typically around 10:30 AM to 11:30 AM) is the most popular choice because it allows you to board the ship by noon, enjoy a "free" lunch at the buffet, and start using the pools or bars immediately. This essentially adds a half-day to your vacation. However, early check-in often involves longer wait times at the terminal and crowded elevators. Checking in late (usually 60 to 90 minutes before the "All Aboard" time) is much more relaxed; the terminal is usually empty, and you can walk straight onto the ship without a queue. The downside is that you miss several hours of onboard activities, and the buffet may be closing for mandatory safety drills. Most experienced cruisers prefer the early arrival to secure reservations for specialty dining or shows, while those who live near the port or prefer a stress-free morning often opt for the later, quieter window.