DO. NOT. WASTE. YOUR. MONEY.
I know what you're thinking: How bad could this be? No way Marvel would endorse something that isn't 100% awesome. This must be a guy who went on the first day when they had glitches, it has to have gotten so much better since then.
Don't do it. Marvel really duped us on this one. There are two decent activities to participate in (a shooting game and a maze) but both require a full hour wait and last only a few minutes at best. The rest of the area has very little interactivity. I went several days after the opening night and everything was working, nothing was out of service. Despite that, my kids (7 and 9) were bored the entire night.
The 3D/4D graphic shows were cool, but they were very brief and not at all worth the $150 we paid for a family of 5. I'd love to have time travel as a super power so I could go back and tell myself not to waste the money or the time. Hopefully, you don't make the same mistake.