Following an Alaska cruise in the spring, we plan to drive from Seattle to Denver-- leaving Seattle on May 23 and flying out of Denver on June 5. We would like to spend 3-5 days visiting Yellowstone and Grand Tetons. What other things can we plan? Will we have time to drive any of the Washington-Oregon coast before heading eastward? Any and all suggestions are welcomed-- must-see places, accommodations, etc. Thanks.