Pediatrician's waiting room new place for playdates?

Yesterday was my day off and Braden was scheduled to have his 15 month pediatrician appointment/ turned into follow up appointment from his health issues this weekend (he is fine).  I decided that for a 10:00 appointment, I needed to be out of the door by 9, since I need at least a 15 min buffer zone (I hate being late.)  Well, needless to say, the boys were ready to go by 8:30, and in our house, that is what is referred to as the "window of opportunity."  This is the margin of time where the boys are ready, shoes are on, bags are packed, and they are itching to leave.  If you wait too much longer, then inevitably someone will mess their diaper, lose a shoe, or one of them will push the other one down... all leading to a cascade of events that will end up making us later and me more stressed.
So, since we got off so early, we arrived an hour before the appointment.  I was dreading going into the waiting room and having to entertain the boys and keep them off of the dirty floors.  To my shock, there were lots of other (non-sick) kids their ages in the waiting area as well.  They enjoyed playing with each other, trying to get into each other's strollers, etc.... Even the shots they received at the end of the appointment didn't cast a dark shadow over the good time had by all.  Next time they have a scheduled well appointment, I am going to make the best of it and show up early.