Well, I didn't mean to suggest that Nikon didn't do any shows or events. However, lately, I've seen much larger Canon presence.
There are pages on the NPS site where some of the advantages of membership... including loaners and repairs are detailed. Not all of it is free.
I note that Canon has different tiers of Pro membership which start at "Silver" and that tier is free but comes with few services besides a membership card and, presumably, access to the Canon Pro area at events. Their required gear list is similar to Nikon's, if not even more restrictive. That surprised me.
--Ron