As a guest at the recent meet, I can say there definitely is an attempt to register non-members at York. I did not register at the meet when I went on Thursday, as I simply ran out of time. I have since registered on-line. If a newbie chooses, there is an option for a six month trial membership if the person doesn't want a full membership right away.
The Eastern Division's website notes that 60 new members joined the TCA at the October 2018 meet.
Jim