my husband and i are planning a trip to yellowstone last minute as my parents are going to watch our daughter. we were thinking end of this month or early august. i looked at lodging and everything in park is full. we are planning 4days. driving up from boulder, co. where should we stay if the park lodgings are all full? would we stay in one place and drive daily into the park? where would be the best location to stay for easy access? or would it be recommended to stay at a few different hotels at different surrounding areas of yellowstone?