Snagging park reservation tips?

[Epicnemesis]

So my parents want to come with us on our next trip but the passes are sold out for that day. I know there is a pretty good chance I’ll be able to snag one the day before, but does anyone have an app or website that will push an alert to me when there is an opening? I know there are a bunch of options for restaurants, but I’m having a hard time finding one for park reservations.

I feel like one should exist right?

 

[StarlitNight05]

There's a Twitter page that posts about park availability. Looks like they have a customized alert too:

https://twitter.com/x/status/1449808153210667008

 

[Therunnerflight]

Magic Key Man (@keytotheresort) on twitter, as well