Do you take people as they check in or what order

As you come in & its best to go when they 1st open or you could be there awhile...

There were only 5 people in the waiting room when I arrived. They took about 10 that came in after me.....2 1/2 hrs later they got to me so they do not take in order that you come In. I asked....they do not take appointments for immunizations. I arrived approx 9:15

They take people in order of check in if no appointment is made (most people are walk ins).