Well, here in Albany, New York we are lucky to have instructors of a caliber that you usually only find in large cities and a dance floor, at the studio, that is near competition size (about 5 feet short on the short line). Nonetheless, during the busiest times (weekday evenings) their can be all 8 instructors teaching with about 10 - 20 people on the floor (including those couples that are practicing). Our studio owner often reminds us that many studios are just as busy with a floors half the size.