Between Portland and Hood River, Multnomah Falls is one of the tallest year-round waterfalls in the United States and is the most visited natural recreation site in the Pacific Northwest. It’s a “can’t miss!” if you’ve never been! This waterfall is easy to get to. It's right off of I-84 (on the way from Portland to Hood River). It is a brief walk from the parking lot to the waterfall, no hiking involved.
Hood River is famous for it's windsurfing and kiteboarding. Go for a walk by the river and check them out! Or if you're feeling brave, take a lesson. Just don't get injured before the big day :)