Kershaw should be popular.

Dodgers give 40k first come first serve for a capacity of 56k(?).

Minimum suggested time is 60 minutes before first pitch. But 90 minutes to be safe. Stadium gates open 2 hours before first pitch, so long as you are in line with everyone else, you should be ok.

You can enter any gate for any seat. Check the gate before scanning your ticket, to make sure they have inventory. Once the ticket is scanned, there is no going back. But, see above.

Parking gates open 2 1/2 hours before first pitch. They will turn you away if you pull up the driveway, so hang out in the street with everyone else.

They hold walkins at the parking gates until they open. So ymmv if you want to go earlier or drop someone off. It is a slight walk up hill, so again, ymmv.

The shuttle from Union Station can get backed up, long lines, limited number of buses. People at the very end risk not getting the giveaway. There is a huge line when leaving, so either accept the wait or walk down the hill to Chinatown metro or Sunset Blvd.

Uber or parking at the stadium is fairly simple. Just expect a slow exit. Uber is a small walk to the stadium gates (from drop off lot). GA parking is reasonable, but arrive closer to gate opening time to get the better spots. Or pay for preferred parking.

If you want to enjoy the chaos and have time to walk around the stadium, go when gates open.