Planning a 4 week trip in August/ September, from Tucson,AZ to Maine. This is our first long trip and we would like to feel free to divert and see sights along the way. Is it better to have reservations at RV parks along the way or would that create a schedule that would prohibit being flexible enough to see the sights. I guess I'm leaning towards no reservations and hoping to find suitable overnight stops. Any advice from experienced travelers would be welcome.