Just now got the mobile Garden. I'm following the old school guidebook on my Kindle for side quests & secrets. I acquired Odin & Tonberry then went to the Chocobo forest nearby.
'Oh this'll be relaxing after that agonizing hour long button mash chore that was King Tonberry' I thought. But nope. It's just annoying. The kid got me a bird, I got the trophy, and... Yay? I didn't see any reason to have one to ride.
Only reason I see this quest being worthwhile is more cards for Triple Triad (I think the Chicobo one needs traded into the Queen to become something else? Idk) but I could be wrong.