I am trying to plan our first Amtrak trip. We've been wanting to do this for a long time and now that we are retired, this seems like the right time. We're thinking April or May,2010-- Chi to Sac, Sac to Sea, Sea to Chi. We would stay one night in each city. I think we would like to have a roomette. I have an Amtrak Mastercard with 7000 AGR points. I will probably have about 11000 points by December. But I don't want to wait too long to get our tickets. Should I go ahead and book our tickets and cancel those and get new ones if they are available when I get more points? If I don't have enough for a roomette, can I add cash ? On which leg of the trip do you suggest that I use the points? Thank you for any help.