I have heard some good things about the reservations as far as hunting. I know they also have made great effort in the last 20 years to produce excellent habitat on some and promote the resource. Problems I've heard are related to harrasment, theft, and rape. Remember you are not technically in the US and local law enforcement will not intercede on your behalf. You will have to rely upon the tribal police. My point is I have would probably go myself or with friends, but not with my teenage daughters or wife. I suspect the bird population to hold up on the central river reservations. Remember your North or South Dakota license is of no value, you need a tribal license, and not all land within the boundries are open without permission. Good news the licenses are annual, not 10 day, so you can go back a few times without licensing again.