They do not let you do professional work whilst with them, though obviously any other jobs which do not impact on the term are OK. They do have quite long holidays - 10 week terms - but having said that twice so far my DD has gone back early to do extra stuff, she says this is more common in 3rd yr especially.
You do have to be very dedicated. It is only something you could stick with if you really loved it - then somehow the tiredness etc is all worthwhile
