Well I went, paid the class fee and did it

Spent the whole 1¾ hours on Pinan Godan, had my performance of it pulled to shreds

and received a lot of feedback from Shihan and Sensei. Not just on the kata but also on mechanics - posture and alignment
Had a great time, IMO it was really worth going and spending the time and money for it. Would have still been a bargain at 3 times the price. Quite apart from the fact that it was for the regular class fee of $5. How often does it happen that a club doesn't use a visit from a senior grade in the organisation as an excuse to generate some revenue?

Mick