The first two classes Kili was definitely a bit tentative. Not as bad as she is at a show, but she was a bit distracted and a bit slow. I've been using combinations of food and toys depending on her mood, lots of fast paced, high pitched happy talk, and alterations in pace to try to keep her more focused and increase her tempo.
This was our third class and I was really happy with how she did! Although we still have some distraction, it was more of a happy, curious distraction than an "oh dear, what's that?" and overall her focus and her pace were much better!