For the RZ in Montreal I did get an email about all the details two days ahead of the show. It mentioned which location to get my tickets and wristbands. It also mentioned the time to arrive for backstage tour draw: "In order to be entered for the opportunity to win a back stage tour you must arrive by 6.30pm – please note that this is subject to change due to production and back stage needs."
The initial email when I bought RZ did say I would get all the info 3-5 days before the show, I guess they were a bit late in Montreal with the info.