I have been dragging my feet about booking this trip,and not the bedrooms are sold out on the SWC. We are two senior ladies who unfortunately get up to the bathroom a lot at night, so I don't want a roomette. What are the chances that there will be a bedroom cancellation in the next month or two? I could book for the day prior and spend another night in SAN, but would rather not. If I book for the day prior, and a room becomes available on my preferred day, I can cancel without penalty...right? CJ