Cash Shop Specials 12/23 - 12/29

i just saw someone with the open concert chair. however it did not look like the one in the pic. it only had the two platforms and none of the stuff at the back. however just one person was using it

how do these work? does everyone in the group chair need to have the chair or can you somehow share the chair?



EDIT

Anyone got that gif of the animated Snow Globe chair?

sorry don't have a gif. if you are after the one where the guy carries a shovel - i have seen it before, the user is shovelling lots of snow with the shovel, and there is an intense snowstorm. the chair user also appears to be automatically given that facial expression, unless that person i saw was sitting there pressing the key for it