Train question

So I booked an Amtrak Guest Rewards ticket to take the overnight #66 Regional from Philly to Boston on Saturday night, as UChoir has a concert on Sunday of John Stainer's "Crucifixion." I've been on the overnight twice before; how well I sleep appears to depend on whether the other people in the car are quiet, or I'm surrounded by old ladies yammering away all night. The last few weeks have been more draining than I would like to admit, and now a night of probable bad sleep in coach is seeming less appealing.

Has anyone ever ridden Business Class on an Amtrak Regional? Anyone ever try to upgrade an AGR ticket?

[EDIT: Called AGR; because I hadn't printed the ticket yet, they were able to cancel the original coach ticket, return the points, and then redeem for a new Business Class ticket. I just found out that Ed is apparently giving all the Choral Fellow basses short solos in the Stainer (I should go look at mine before rehearsal tonight), so getting a decent night's sleep seems especially important.]