From what I have read it is more like introducing some wild animals than keeping pets. You provide extra food in winter and make sure there is water and then they do their thing. I don't think you get to know them as individuals.
They don't come to a coop so you can't protect them from predators (they roost in trees) and I don't know if I could cope with the death and destruction that would entail in my place - I am confident that the Guineas as a whole would survive and thrive but individuals would not.
So it would be more like the rabbits and the wild birds than the Princesses.
That said, I cope with the foxes catching rabbits and wild birds - one walked right by the chicken coop yesterday with a mocking bird in its mouth

- but the difference would be that I had introduced these birds.
Hmmm. I don't know. I am very tempted as I have a horrible bug situation particularly ticks and I do think they are funny. Will investigate the noise angle too but it is not what I am most worried about.