You’re in a packed workshop and you can’t see. Now what?
Telling other dancers to move is not necessary, especially if they’re mid-pattern. And it will likely come across rude.
Instead, move to a spot where you can see with out disrupting what’s happening. That means quietly, without interrupting the flow of the rotation, and without running.
Don’t noisily complain to your partner “I dunno, I can’t see!” – you’ll sound like you’re making other people responsible for your workshop.
Yep, you read that right: it’s YOUR workshop.
As in, it’s run by the instructor, but you have to take on that you’re responsible for your learning and your experience. So if that means you have to move – move. If it means raising your hand to request a way to see, then do that.
But above all, be polite and respectful – raising your hand is you asking permission. Then you can a) ask if the front line can sit so the back line can see, b) ask the teacher to demo from another angle or place in the room, or c) request to simply see the teacher(s) demo the entire movement again (without student participation).
Don’t be “that guy” or “that gal.” You don’t need to make noise or yell at anyone, and it’s not even worth it to get frustrated. A crowded room is a chance to learn with all sorts of dancers and it shows the teacher is in-demand – no problem there. All you have to do is take responsibility for your learning.