We are looking forward to a seven week trip through Maine and the Maritimes in September October and of course wish to keep our accommodation costs to a minimum. We would prefer to spend our money on other enjoyment. I notice that Hotwire is referred to for accommodation but do not know how this works. I assume that once reserved you can not cancell or change dates. We are wanting to reserve nights of 7th, 8th and 9th of September in Boston. Any advice and recommendations would be most appreciated.