Hi Dave. I say “yes,” and I use expiration dates with my session purchases. My reasoning is simple. In my opinion one of the single most important elements to achieving their fitness ‘success’ is CONSISTENCY. I want to encourage my clients not only to sign-up for sessions, but to actually use them. I do this, in part, by enforcing an expiration date. Recognizing that everyone has issues that come up in their lives that preclude each of us from meeting certain commitments, I give a fairly lengthy expiration date, and I always include, up-front, information on how the expiration works. So, when a client decides to sign-up for a series of training sessions, they do so with full knowledge of the expiration policy and with at least the intention to use their sessions fairly consistently.
Everyone’s practice is different and their justifications for having certain policies may be personal in nature. Those are mine for having an expiration date on purchased sessions.
I hope that this helps.