Small drawbacks have to do with mobility. Unlike a normal 3DS it fits in any pocket. But that applies to the XL mostly well.
The quality of the graphics and resolution is even slightly sharpened in 2D in comparison, which is on the technical implementation of the screens.
Most annoying is still the higher energy consumption during 2 / 3DS compared to the old DS devices. at least every 2 days in Sleep / StreetPass mode (and even more so after a few active hours of play) the 2DS has to a charger. But an increase of 2DS! This is in contrast to the 3DS in the delivery!
Animal Crossing is a sweet, relaxing structure and collection game. Interaction with other game characters, collecting tasks in sugar sweet graphics and nice ideas. If you like something, like games like Harvest Moon ect. or predecessor is the right place! And that for almost all ages! Read only should already can.