QUOTE(hoefler @ Mar 12 2012, 06:56 AM)

I won't stay in a park that will not take my reservation. When we travel, we will put in a long day, between 6 and 8 hours, I don't want the chance I won't have a place to stop at.
We are at the opposite end of the spectrum. We almost never make reservations unless it is a potentially popular destination or time period (e.g. yellowstone on labor day). Usually, we just call ahead to see if the park has sites available, but don't make any reservations. If the park fills up by the time we get there, we'll find another park or stay at Wal Mart.
This does change when other parties camp with us. Then we will make reservations so that plans won't change.