Canadian Nationals Tickets

I am hoping to attend Canadian Nationals 2027 for the first time and am considering buying all sessions pass.

I am planning to attend the Saturday evening session and some of the Friday sessions. My schedule is uncertain at this point, but I am may be able to attend some sessions of Thursday and Sunday.

Would it be worth it to be buy an all session pass or waiting until individual tickets go on sale? Are individual session tickets generally significantly cheaper?

Do good seats usually make it to the individual tickets phase? My hope would be to buy 1-2 P1 or P2 level seats.