Right across the highway from the entrance to the wedding campground is Sol Duc Hotsprings Rd. A 20 minute drive gets you to the most beautiful hike to an incredible waterfall. The hike is about 2 miles long and an easy one for any level of adventurer.
There is parking at the Lake Crescent Lodge and nearby roads giving access to a series of gorgeous trails in Olympic National Park, all of which are beginner friendly (save for the Storm King trail) and absolutely beautiful. Don't skip the Moments in Time trail, offering access to lake crescent at random intervals and little beaches you can chill at throughout your walk.
All of the beaches in the area are incredible but this one really stood out. A magical little trail through the ferns and mossy trees takes you to a beautiful beach with so much to explore and all the cool rocks and driftwood your heart could desire.