Nope, not an issue. No one cares...Disney certainly doesn't.
If you land, on-time, at 8am, you should be at AKL by 9:30, probably sooner, using DME. Hand your bag off to Bell Services. Understand that if you use Uber, you will have to wait for them to get to you, then they have to drive around to the main entrance, drop you off. You then will have to walk or tram to the park entrance. Check the bus arrival times. If there is an AK bus arriving within the next 10 or so minutes, take it. Otherwise, use Uber.
If you use Uber from the airport to AK, then you'll arrive at AKL around 8:45. If they will wait while you drop your bags, great. That would get you to AK around 9:10ish. Up to you if you want to spend the money or not.