First off, the totality time indicated in the RG map is misleading. The totality is of about 2 minutes duration, not 12 minutes. There will be many, many people in the path of totality, coming from out-of-state, even out-of-country and there will be a large concentration of them in the Madras area. It is already too late to obtain lodging in motels, hotels or campgrounds in the totality path. There may be a few, but price gouging has already began, even in towns outside of the path. I say this based upon many phone calls months ago. Your best approach would be staying overnight on the 20/21 with a friend or relative located in the path of totality, so that you can view it that morning. The totality experience is completely different to a partial experience, so it is worth your trouble, but the traffic will definitely be a problem that morning. Get solar eclipse viewing glasses, which are available from reliable sources online.