Amtrak Guest Rewards - Any current promos for referring a new member?

My father plans to use Amtrak next week and is not a Guest Rewards member. Anything I can do to maximize his new enrollment?

Refer him, the details are on the AGR splash page. Your father will get 1500 points rather than the standard 500 assuming he travels within 90 days. You will also get 500 points in your account.

https://www.amtrakguestrewards.com/index.cfm?category=RAM&loc=refer_member.cfm&lid=L94