is the golden age passport still good

Senior pass used to be free , now it is 80 $ but still cheap compared to entry fees. You can exchange it for the new pass but get it changed before you leave on your trip so there is no problems with it

Golden age has been replaced by America the beautiful access pass for handicap and is free, you can exchange your old pass for the new one free. They also offer a senior pass for 80$

Sorry no idea about that. We went there with a tour bus.