[Porsche-O-Phile]

Depends on what you believe I suppose. Some people find it nearly essential (I personally know people who consider it virtually mandatory to attend twice a week) whereas others (like me) don't attend at all - ever (I consider it a complete waste of time).

It's your life and you only get one. Don't let somebody else live it for you. If the clients aren't going to work with you and compromise a bit then that's their issue. Is there no other time you could carve out during the week?