What are the number of wheelchair spaces, total regular seats, and the purpose of the fire exit in the hall?

These are located in the front row (Row A), one on the left and one on the right.

There are 2 seats allocated for wheelchairs.

3.1.2:

• Rows B through J: There are 9 rows, each with 10 seats.

• Row A: There are 5 seats on the left and 5 seats on the right, totaling 10 seats.

• Row K: There are 4 seats on the left and 4 seats on the right of the "LIGHT / SOUND BOX", totaling 8 seats.

There are $\boxed{\text{108}}$ seats, excluding positions of the wheelchairs in the hall.

3.1.3:
A fire exit is present in the hall to provide a safe and quick escape route for occupants in case of an emergency, such as a fire. This ensures the safety and evacuation of everyone in the building.