OK, it used to be that you didn't have to stay in MEM for the IAP, so I would get on the jump seat, betting they wouldn't call me. If they did, and they couldn't talk to you, that was considered a "decline sub" event.
They I heard that the company was calling people, and if they didn't answer, it was not longer a decline of sub, like it used to be, but something else, I can't remember what.
Can someone clarify whether or not you can get on the J/S during the IAP without harming yourself?