You mean buy tickets on line?
Yep, do it everytime someone comes to visit and we head over that way. They work fine.
All you need is the bar code you'll be sent as a 'ticket' when you buy on line. Print it, bring it, they scan it ..... done deal. Just like online check-in for the airlines....
and per ur other post ... good for a year as I understand from other posts here....
... since Disney just announced a price increase...it never hurts to buy early
other posts have said unused e-tickets were succesfully returned ( b4 they expired)