Taxi4Ballet, thank you we may do that. It just takes a bit more effort to go to a series of individual classes than to sign up for a course, so to speak, where the same people will be there every day. Dd always keen to make the effort when needed, though.
I must say, regarding the Tring Christmas thing, when DD did it, she found it very tiring because they went to a show in London very late and then had class the next day. She was quite a bit younger then of course. I remember watching her at the final "parents watching" session and she was knackered!