My sister and I have 3.5 days in Portland, Oregon and Washington. I have been everywhere. She has never travelled. I want to show her as much as possible from August 3 to August 7. ( flying in and out of portland) i do not mind driving as long as it is scenic. We are water people. I have mentioned the beach, waterfalls, the ferry, and whale watching. She is very excited but I do not know how to fit it all in. We are ok with short walks but no long hikes. Can someone help me fit as much as possible into three days?