Hi cruxcreative,
Since our ticketing partners plugins would handle the membership, I’d suggest that you take a look at those various options and see which one could best handle your situation. Perhaps Easy Digital Downloads would be one to look at if you are only selling tickets to events. However if you have other products, especially physical products, that you might be selling, then maybe WooCommerce would be the one to explore.
Our ticketing plugins simply connect tickets to events, so it’s going to be one of the partners’ setup that would restrict access to the calendar.
Does that make sense?
— Julie