The only hotel for a shuttle that makes sense is the Ambassador and you have to be a guest there to use the shuttle, which wouldn't really make sense if you're not even going to spend the night. Just take Uber from the airport to Bluemound, which probably costs like $25-30 and you'll find someplace with a shuttle there. Kelly's Bleachers, J&B Blue Ribbon, McGinn's, Milwaukee Steak House, Balistreri's. All on Bluemound, all have shuttles. I'm sure I'm probably missing a few more on Bluemound alone.