Orlando Fun Tickets
We have purchased many tickets there. We go to their office down Palm Parkway behind Olive Garden. We haven't done mail tickets because we usually have questions.
Suggestion: once you get your passes, photocopy them front and back and file this in your travel docs. While Disney often states tickets cannot be replaced, they will do so if you can provide ticket info. They just cancel the old ticket and give you a new one with your remaining days on them.
Depending on the season, we have purchased half price LaNouba tickets at their office.