Where are you located?

I was in Europe this weekend and experienced the same thing. Every single page load brings up the opt-out cookies GDPR page. Doesn't matter what you select, it will still reappear.

half the time, the popup would load in between the old reservation layout and the new one, causing the page to not allow scrolling. Which then requires a refresh and the popup again.

It's like AA hired their web developers from sketchy sports streaming sites.