Wick3 said: "Before pandemic, I accompanied my grandmother to a Broadway show (Harry Potter). A few days before the show, I recall receiving a phone call from the theater asking if there's anything special needed to be done with the seat (some seats are removable or can be changed due to the needs of the person with disability.)
And no, you are not a douchbag for asking for a handicap seat."
This has also been my experience with both the Shubert and Nederlander houses as well as City Center, though I've also had email contact from Jujamcyn's theatres (now ATG, but I'm not sure if they are handling it the same way). Roundabout has been hit-or-miss, but at the Todd Haimes (formerly American Airlines) I seem to recall that the accessible seating is rear orchestra with non-fixed seats that don't require notice.
What Wick3 is referring to with the changeable seats is what I meant by "transfer" seats, to clarify my post. Some of those seats have either an adjustable armrest to aid in moving from a wheelchair or scooter to the theatre seat, or are simply positioned on the aisle for ease.
One thing I might suggest if your mobility issues are such that getting up and down repeatedly is difficult is to ask your usher to redirect people to the other side of the row. I've had to do that because even on good days, my mother's knee issues mean the most difficult thing is changing position.