Just chiming in to share my experience, too. I am currently at a work conference so I looked between TicketsAtWork and the conference rate - some “packages” (number of days, park hopper or not, MaxPass or not, etc.) were MUCH better through TAW and others were slightly better using the conference code.
And… just thought of this. My family is coming in tomorrow so I’ve purchased TAW for them (better deal than conference) but my coworkers and I just purchased twilight tickets at the convention center for $75 (was $127 for park hopper). It makes me wonder - couldn’t ANYONE just walk into the Anaheim convention center and buy tickets? Say they’re with the conference? The person there clearly would never know if you were with the conference and if they asked you could say your spouse is currently at the conference and you’re there to pick up tickets so you’re ready to go at 4:00 when the tickets start.
Just a thought…