I've been thinking more on Joe's point that Epic will have three visible "family" coasters at opening. Donkey Kong is arguably is the least visible of the three, as it requires entering not one but two portals before you can even see it. If you enter Berk or Dark Universe, you will see their respective family coasters pretty much immediately, but if you go into Nintendo, you have to travel through an additional tunnel before you can catch a real glimpse of Mine Kart Madness. How much is that going to influence crowd patterns? Furthermore, how much is DK being one of the only rides available for early entry going to affect its lines out of the gate?
The truth is, we don't know yet, and no amount of available data is going to give us the answer. We're just going to have to wait until the park opens and we see where things land.