Later time. We are also having a party for our 5 year old and picked later time as he still does quiet time and a lot of our friends have younger toddlers that still nap.

Depends on if attendees have dropped their nap or not. Also if parents are morning or evening people. If napping/evening people, 3:30. If non-napping, 1:30.

330, 130 is quiet time

The later time.

1:30. Kids that age are going to start to fall apart by 4 or 5pm, especially if it's a very active birthday part. Your kid likely will too, at that point, from the excitement. You'll want things to be winding down by 3 or 4 at the latest. It also allows families to have normal evenings/bedtimes.

We have two times to select from 1:30 or 3:30 on the weekend. Wondering which one would be better. Most kids attending will be 4 or 5 years old.