Well, it really does depend if you don’t mind the noise they make, and cleaning out the birdcage every day… I’ve kept a couple of parrots before (not Macaws) and they could be pretty noisy at times. You could look the information up on google, or get a book on how to keep parrots, it might help. As for what they eat, that differs with each species. Macaws are quite fond of macadamia nuts. Here’s a link that you might find helpful. :)