can i use all of my guest passes in one day to the same park? can i use the guest passes in two different parks, different days?

Yes all of them

Yes

👍

No, if you have season tickets, gold, silver upon arriving with your guest/s tell security that you have guests with you, you're entitled 4 for the season. Park staff will print your guests their tickets for the day.

You print the guest passes out as tickets so you can use them how you'd like.