Is there a separate entrance for very elderly people to use who are slow and have trouble walking?

5th St entrance was very easy to enter-escalator and elevator to your right

Yes...

Everyone is saying yes, but good luck finding it. Lines go very fast so they should not have to stand long in line. Now there are on seats to sit down in before you get to your seats. If they have a walker with the seat attached it would be a good idea to care it with them. Also you may want to call ahead and ask about one of the handicap seating area. Enjoy your event.