We will be travelling to the North Rim of the Grand Canyon on our trip (after visiting Zion NP). I have two questions on this part of the trip:

1) How screwed are we if we don't make reservations months in advance for lodging? We know the approximate week we will be there, but to nail it down to a day this early in the planning is impossible.

2) I have read that the road to the north rim is closed until "Mid-May". How often does this closure extend to "the end of may"? This is the time when we will be visiting (it is highly doubtful that we will be there for Memorial Day weekend. Our visit will probably be earlier than that).

I hope asking all these questions over the last couple of weeks is ok. I can't really contribute much to other people's questions because this one will be our first road trip (hence the billions of questions).