<font face="Verdana, Arial, Helvetica, sans-serif" size="2">Originally posted by jonu:
Question I've always had: does having an Amtrak Master Card constitute account activity, preventing points from expiring after 3 (5?) years?</font>
No, using the Amtrak MasterCard would not prevent your points from expiring. Amtrak Guest Rewards points expire 3 years after your last Amtrak
travel posted to your account.