There will be a railway event at McAdam on Saturday, September 15. I understand there are events planned for the afternoon, with registration starting at noon. The highlight for railfans will be former CPR M-630 #4563 on display. This is a public event.
NB Southern will run their passenger excursion train from McAdam to Harvey from around 10:00 to noon, for employees and their families only.
I understand there is going to be a notice in the Daily Gleaner, so keep your eyes open for that.
I have a family event in the late afternoon but I expect I will be in McAdam for the morning and early afternoon. Can't miss the rare CP unit!
EDIT: Thanks to Danny McCracken for the details.
EDIT: CP 4563 is now at Farnham, Quebec as of Sunday September 9. Photo by Frank Jolin
Here's a photo I took of CP 4563 at the Canadian Railway Museum (Exporail) on July 6, 2005.