According to the GPStPete website, only General Admission tickets remain for Sunday. Saturday grandstand seats are available in socially distanced blocks. the entire block must be purchased. GA is available. Friday is General Admission. Three day grandstand ticket holders have first rights to their grandstand seats on Friday

The event schedule:

Schedule subject to change without notice
All times Eastern Time

Friday

Time	Series	Session
7:45 AM – 6:00 PM		Gate Hours
8:00 AM – 8:40 AM	MX-5 Cup	Practice 1
8:55 AM – 9:25 AM	USF2000	Practice 1
9:40 AM – 10:10 AM	Indy Pro 2000	Practice 1
10:25 AM – 11:05 AM	Indy Lights	Practice 1
11:20 AM – 12:00 PM	MX-5 Cup	Practice 2
12:15 PM – 12:35 PM	USF2000	Qualifying 1
12:50 PM – 1:10 PM	Indy Pro 2000	Qualifying 1
1:25 PM – 1:55 PM	Indy Lights	Qualifying 1
2:10 PM – 2:40 PM	Stadium SUPER Trucks	Practice/Qualifying
2:55 PM – 3:15 PM	MX-5 Cup	Qualifying
3:30 PM – 3:50 PM	USF2000	Qualifying 2
4:15 PM – 5:00 PM	NTT INDYCAR SERIES	Practice 1-Peacock
5:25 PM – 5:55 PM	Indy Lights	Qualifying 2

Saturday

Time	Series	Session
7:45 AM – 6:00 PM		Gate Hours
8:00 AM – 8:20 AM	Indy Pro 2000	Qualifying 2
8:35 AM – 9:20 AM	MX-5 Cup	Race 1
9:45 AM – 10:30 AM	NTT INDYCAR SERIES	Practice 2- Peacock
10:55 AM – 11:35 AM	USF2000	Race 1
11:50 AM – 12:35 PM	Indy Pro 2000	Race 1
12:50 PM – 1:20 PM	Stadium SUPER Trucks	Race 1
1:45 PM – 3:00 PM	NTT INDYCAR SERIES	Qualifying- Peacock
3:20 PM – 4:05 PM	Indy Lights	Race 1 Peacock
4:20 PM – 5:05 PM	MX-5 Cup	Race 2
5:20 PM – 6:00 PM	USF2000	Race 2

Sunday

Time	Series	Session
7:45 AM – 4:00 PM		Gate Hours
8:00 AM – 8:40 AM	Indy Pro 2000	Race 2
9:05 AM – 9:35 AM	NTT INDYCAR SERIES	Warm-Up- Peacock
10:00 AM – 10:50 AM	Indy Lights	Race 2 Peacock
11:05 AM – 11:35 PM	Stadium SUPER Trucks	Race 2
12:00 PM	NTT INDYCAR SERIES	Driver Introductions
12:42 PM	NTT INDYCAR SERIES	Green Flag NBC

Pre race show begins at noon on NBC Sunday.

NBCSN lists a delayed Practice show at 10 pm ET Saturday. I assume they mean qualifying, but I will try to get clarification.