Douglas,
Simple solution contact your group leader and get him/her to submit your comments.
Next time why not book yourself.
I didn't realise JY did do group booking I thought JY was for individuals not groups otherwise it would be Just Groups(JG).
Quite disappointed to find that there are group bookings on tours, I quite like the ethos of being an individual not a group. I am concerned that if there is group on a tour it will dominate and the individuals are left out in the cold or the tour is divided into 2 or more factions - not good for harmony.
Be interesting to have a comment by JY on this matter and their policy on group bookings.
Roger S