Hi Nat, nice detailed write up, it's Al with the crusher. I hear what you are saying about turning up to an event for the first time, it can feel a little like not having any idea what you are supposed to be doing, but you soon get the hang of it. I've noticed all the staff and roboteers keep an eye out for each other and their belongings for the newbies and veterans alike. Likewise I've found if you need anything it's best to just ask the staff members, despite being busy, they have always been very helpful.
I don't know I've you have pinned the gearbox on your other drive motor yet, but if not, wrapping the pins with duct tape or a tie wrap has worked well for a few people, myself included. Thanks for letting me grab the couple of pictures!