Lots of people tend to not move them to speed the judging up a bit as well as some classes can be very big, in particular prettiest bitch etc. There's no hard and fast rule.
I think it depends on the numbers in the classes as they can be pretty big.... Last year I didn't move them unless the class warranted it - best condition, brace etc. Otherwise I would have been there all day! Such good fun - really enjoyed myself!
Ditto, mostly you would only move best veteran / best condition etc, and just look at faces for pretty bitch etc. Though my friend went to a show where the judge went over every single dog and moved it for all the novelty classes, it took hours!!!!
Really nervous but also really excited. looking at wearing black trousers and a smart shirt ? will this be ok? obv if its mega warm i'll probably wear something a bit cooler.