FWIW...I love Stock and Campus, and I don't count songs. I haven't for years. It's too distracting, plus it's almost impossible to keep track, especially when it's hard to hear when one song starts and another ends. I always tell the dancer that I will pay him $100 for 15 mins. It's about the same time, 3 minutes per song, except that I can glance at my phone and in an instant know when the time is up. Most dancers know that clients fly in for a few days, so wanting your repeat business makes sense. I've always found the dancers to bend over backwards to make sure you are having a good time, in the hopes that you come back to see them, which I almost always do...
Just my 2 cents.