Hard to say - some do, some don't. I do, because I have childcare costs I have to cover so if I only have one client in it needs to be worth me working, iykwim. Not all consultants do (at a wild guess I'd say it's maybe a 50/50 split).
Yes jennimoo. Most consultants go from about 9:30-2:30 in a group of 2-4 people. Some are a bit quicker, but should be able to tell you when you book. I've had some clients book a one to one session and bring a baby. Including one woman with a three week old . I was so impressed that she was even dressed.
Yes, it is worth it. I'd completely wrongly diagnosed my season using the online sites. Seeing it all happen in front of the mirror, & watching others coming to life in the right drapes, was a revelation. I've saved money since by not buying things I'd have jumped on before, & got far more compliments by wearing the things I do have.
Kettlewell is just an online shop that gets recommended by the consultants as it grades all it's colours according to season. www.kettlewellcolours.co.uk/
Yes - it has saved me a fortune! Someone will come along in a minute to tell you it's as easy as seeing what suits you - it's not, well not for me anyway. I just can't see colour confidently but I can see now that black was making me look tired and old. I am buying fewer clothes but wearing them all hence the saving. Wish I'd done it years ago.