We will be visiting Seattle and then going to Portland for a family wedding the end of Sept. I am considering the train since the cost of renting a car with the fee for returning it to another city seems prohibitive. But I have some questins. Are there rental cars available at or, near the train stations? We will need a car in Portland. Also, my husband has some mobilitiy issues. If we take the train will he have to do a lot of walking or are wheelchairs and porters available?