One of the coolest things about Trade Ships is the randomness - you never know what you're going to get when your ship comes back! It could be a ton of cookies, some rare items, or even a new cookie character. The uncertainty is part of the fun!
How To Unlock Trade Ships In Cookie Run Kingdom (Full Guide) - YouTube
The exploration aspect is also awesome - you get to discover new islands, each with their own unique theme and rewards. It's like a constant surprise party! And with new islands and rewards being added all the time, you'll never get bored.