So, first off, when i say 30-40 im talking dollars, not percent. Also, as ive said in a reply to someone else, i bought 2 tickets. The After hours tickets are currently 15 dollars cheaper. For example, the ticket was through Disney 179 on day i went (3 days after Thanksgiving). AAA was 163. So each ticket was 16 dollars cheaper. Of course there is still taxes and fees. I did the orders out on both sites before purchasing to see total. With 2 tickets, i saved 32 dollars in this case. Date based tickets, so you just have to check each date to see.
2nd, i bought online. It makes you enter your chapter. Right now of course youll have to wait until after the GP release. Then theyll tell you how to link it, via email.
Also, as i had a room only and wanted a one day Epcot ticket, i compared again. In some cases, the prices are comparable, but in my case for my day, i saved again, and bought our Epcot tickets also and linked.
Normally if a longer trip i may go for a length of stay, but for a short room only and the 10 minutes it took, i opted for a discounted ticket.