Can you get a motor home with a family in free with a senior pass?

If u have a senior national park pass u and ur guest are free

Yes

Senior passes and folks with disabilities can get in for me :)

Yes, your pass is good to go!

The annual parks pass, whether the senior or not, admits the vehicle and its occupants.

I believe so!!!

I'm not sure if I can help you out with this but from what I've been told as long as you are over 62 you can purchase a 1 year senior pass for $20 or a lifetime pass for $80 which should get you in once there or if you already have a state park senior pass then you should be just fine.

There is a senior discount at the entrance. Which is most likely less than $30. But I don't think it's free.

I'm pretty sure you have to pay for entrance But Idk with a senior pass