We saw a half dozen cars turned away at the gate to resorts where we had ADRs.
DH was also typically asked for ID as well as having his MB scanned.
A couple times, we waited 5-10 minutes, seemingly for the guard to explain that no, they were not going to be allowed in. A few swung into the u-turn out of the resort more speedily than appeared wise.
Frankly, I'm all for it if this is finally a crackdown on people using resort parking to go to the parks.