I'm going to be hiking in the Olympic Peninsula for 6 days in late July. I have an extra day and a half to sightsee in Seattle before my hiking trip begins. I will be staying in downtown Seattle for 2-nights and I'm trying to plan my itinerary. I'm considering a day trip from Seattle to Mt. Rainier or a day trip from Seattle to San Juan islands for whale watching. I'm leaning toward the whale watching trip since I will already be spending time hiking in Olympic National Park and I'm thinking visiting Mt. Rainier Natlional Park may be somewhat similiar. Any suggestions?