I have not done the opener in ND before and my area of ND is several hours north of your location.
How will you be hunting? Taking a boat and hunting over water, or taking decoys and field hunting?
If the latter, Ben Brettigen has a good waterfowl scouting report in the magazine portion of this site, lots of good info there.
If you’re hunting water you’re going to see birds, the challenge as you mention is the volume of water in the Dakotas today. You could be on the best looking pothole that held ducks yesterday, but as soon as you shoot at them, they’ll move one pothole over. There’s almost too much water for even the most overhunted of areas.
Put some time in the evenings to scout, you’ll be tempted to hunt, but scouting the late part of the day should put you right into the thick of things for the next morning.
ET