Hi,
Yeah, Casey is a pig too, if it's something she likes. She will try to get it out of your hand or try and figure out a way from her cage to the food! I think they all love food!

Casey, like Oreo, always wants to be with us. Casey will say "Hi Baby!" until you come and pick her up. So I don't really have any advice on how to stop that! We just try not to go to her everytime so she doesn't become the boss and expect us to always run when she calls. How old is Oreo?
As for the Happy Hut, it all depends on the bird. I would advise against them, but a lot of people here love them and find they work quite nicely for their Q... so you would have to try it and see how it works out. The reason I am not a fan of them is because they can become very territorial over them and start to bite etc. in order to protect them. But others here find them great and their birds are not territorial at all, so you have to try and see how Oreo is with it.

I *think* if they want to use it them will teach themselves, but someone else who uses them can give you better advice.

For hating the toys. What kind of toys do you have in his cage? We have discovered Casey perfers the "Pet Stages" toys over the sisal like toys. She really likes anything she can shread (paper paper paper!) or fabric-y ones she can chew, but for some reason is afraid of the sisal and wood blocks! Just keep the toys somewhere Oreo can see them and eventually he might learn to like them...
Good Luck!

Others will be along shortly to offer more advice!