I could be wrong, but I believe you will still get a proper ticket when you redeem the E-Ticket. I hope I'm right. Abe said that the reason they went with the e-tickets was because too many tickets were lost in the mail.
I asked Abe about the Tues entry for reserved RV and he confirmed that the tickets will allow entry on the 27th starting at 8:00am. I always got a kick out of passing the long line of people ready to scramble for the non-reserved spots that have been camping there in the parking lot for who knows how long.
