For most performances people dress nicely, anything from business casual to dress / coat-and-tie. Of course, if you're in the "splash zone" for Blue Man Group, then plastic ponchos and jeans are a better choice... 😉

There's an elevator, in addition to the stairs. If you ask the box office to help you select seats with minimal steps required, I'm sure they can take care of you. FYI, there are also a number of handicap accessible seating areas that can also accommodate a wheelchair. When it comes to parking, you can either catch a quick golf cart ride from the parking deck, or use valet parking at the front door. The staff are very nice and helpful.

Second floor front row is like a balcony no one will block your view

I believe it will depend on the space your husband actually requires in all candidness. The seats are narrower towards the back as previously stated. There are seats dedicated for folks with mobility issues that might work and certainly being on an end aisle would be preferred. Personally, I would contact the Ferg and speak with them. They have been quite helpful to us in the past and I'm sure would be with you as well. There are many different ways they could accommodate you from placing you in the balcony area, to mobility seating, to perhaps adding a chair at the end of an aisle. I hope this is helpful...enjoy your shows!

JLDC- we always opt for box seats. The view is better and the chairs as you already know are not like the others. We like the ability to be able to stand and move around esp at long events