I know I read this somewhere, but cannot find it again. I bought the Dance coupon, used the coupon to go into wherever it is supposed to go, but where do I activate the moves? TIA. 

You can use the moves through the "Social Action" menu. You can access it by pressing Esc=>F9=>4. In there, you can either click on the icon for the dance, or you can set certain trigger phrases that you can type in chat (with / to make it not show up) and that way you can use the dances whenever you want.

Thanks so much.

I used one coupon by right clicking on it, and there seems to be nothing there. Any suggestions? I see the dance icons but they tell me to go to pearl shop and buy the coupon.
My coupon is gone out of my inventory too, so it went somewhere. 
Feeling dumb about this. TIA again. 

Just to check, are you on the character that used the coupon? Because sadly, the dances are only unlocked per character. So first make sure you have done this. Secondly, check that the coupon is neither in your normal inventory, nor in your pearl shop inventory. If this still doesnt help, I recommend sending a ticket to the official support so they can check what went wrong.

Thanks. Yes same character, can't find in inventory. I'll send ticket. I also bought another coupon  just in case it got lost someway. 

That's helpful to know, thanks.

I think after you open the pack, you end up getting individual emotes that you have to open afterwards. It's most likely going to also be in the Pearl inventory. I haven't bought it yet, but that's usually how packs are done from the pearl shop :)