From what I understand, you can't purchase E-Ride tickets until you check into your resort...do these tickets normally go on sale a certain number of days before the E-Ride night?
I have checked in on a Sat. and bought enight tickets for Tues. before. I really am not sure how far in advance they go on sale. We always look at the time we will be there and buy tickets for only during that time period.
We also checked in on a Saturday and purchased e-night tickets for Tuesday. However, they did not have tickets for sale yet for the Friday e-night. So it looks like it is something like 3-4 days before e-night that they start selling tickets.