The venue has a great list of recommended spots on their website: http://www.brownfamilyhomestead.com/wedding-guest-info Scroll down to the bottom to find a link to their recommendations. If camping is your thing, Lake Wenatchee is surrounded by public land and campgrounds. Take your pick!
You do you. Early June in the Cascades could be chilly, so be prepared for mountain weather.
The ceremony starts just after 4:00, so please arrive about 10 minutes early and make your way up to the ceremony location. There will be signs from the parking lot on where to go.