Yes! This is a family friendly wedding :)
The ceremony starts at 4:30, so ideally by 4pm if you’re not camping (get parked, settle in, play yard games and have snacks prior) If you are camping, feel free to arrive as early as 12pm to get set up and enjoy the river! You can even do a quick river float beforehand :)
Semi-formal semi-casual is just fine. Expect it to be hot, though we will have shade and be by the river. Pack some layers for an evening chill.