Weekend ticket in Brno, Czech

Guys, I'm new to this forum. I'm planning to see my first Moto GP race in Brno, Czech this August.
Tickets are available only as a weekend package. No single day ticket available.
If I purchase weekend e-ticket, should I get the valid pass on Friday itself or it is allowed to visit on raceday morning? I can reach Brno only on Sunday. Please help me to clear my confusion.

At the entrance they scan the ticket`s bar code, that is all what you need.

With e-ticket you can enter whenever you want, any day you want.

Or, you can buy your ticket sunday morning from the gates, but it`s a little crowded though.

Thank you so much @gekko1ro.

You`re welcome.