Hi Traceylind, July can be pretty busy. You should'nt have any trouble getting places to sleep in large villages and towns but in smaller places it would be better to book ahead. If you order the CSJ of UK's guide book you will find a few recommended hotels, hostals, fondas etc with telephone numbers listed in the book. Take a cell phone with you and ask someone at each hotel to book a few days ahead for you. And, if you want your luggage carted from one hotel to the next, the hotel will call a taxi service for you to do that.
Buen camino!