You can just ask your instructor to move you to a different group. Maybe you were just unlucky last time but we have been in very well matched group. Be honest with your instructor and tell them how you are feeling and what you need at the beginning of the week. Also persevere! Last year our group had a few dissatisfied customers but if you stick to it the group gels and settles down and the skill levels become more matched and by the end of the week it was all good
Caroline - I have to agree that interski will see you all fine. however if you are going with Crystal and have booked everything start in the intermediates class as you can always drop back a class if you are finding it too difficult or you are not enbjoying it.
When are you going?
Caroline, I live in Southampton, but have never tried the ski slope. I have heard it is expensive?
Peter from Interski used to be chief instructor at Southampton and I really cannot recommend them enough!