Like the previous poster said, you can't make ADRs for counter services. However, in order to avoid the crowds, try to visit the CS's at odd times. For instance, take in an early lunch (around 11:00-11:30) or a late lunch/early dinner (4:00/4:30) or just a late dinner (7:45-on). This way, you'll be in the restaurant when it's less crowded AND, more importantly, you'll be on the rides when most others are eating.