I took the course recently and it was amazing. There are plenty of details in this thread already so I won't go over them again. What i will say is that watching YouTube videos of the Raptor made by owners and even paid reviewers don't really show just how much this truck can do offroad. The hands on nature of the course introduces you to the capabilities of the truck and gives you confidence in said capabilities.
Personally I did not get much out of the reception and IMO you won't miss anything skipping it. There will be time after graduation to look around the museum area. The photographer for my class took some picture of the museum area and they were on the USB drive.
I chatted with a few people before driving so i could find a good co-driver, but they all paired off with other people. I ended up meeting my co-driver literally as I got into the truck. We had a lot fun and it turned out he was a Utah native so I learned a lot about the area around the Desert Peak Complex.