Tron would actually pull more people away from other attractions/walkways more consistently than a large theater.
The Hyperion at DCA holds ~2,000 people. The show usually ran 3 shows a day. As MK is busier than DCA lets give it 5 shows a day for a total daily capacity of 10,000 people. Also remember that they will cut off the line at 2,000 people waiting in line.
So a theater has
- Daily capacity of 10,000 people
- Holds 2,000 people max
Compare that to Tron which has an hourly capacity of ~1,600 people per hour. Can run 7 trains at 14 people per train for 98 people on the ride. However, Tron will hold a TON of people in it's line... ~1,600 for an hour wait.
If Tron has a 1 hour and 15 minute line AND MK operates for 12 hours:
- Daily capacity of 19,200 people
- Holds 2,000 people (more if line is longer than 75 minutes)