From when The Lion King came to Tulsa in 2006
"Because the Tulsa Performing Arts Center’s Chapman Music Hall is configured with no center aisles, Disney provided engineers to remove approximately 150 seats from the auditorium’s orchestra level so the animals could make their famous entrance. It wasn’t as simple as just taking out the seats, it also included the addition of luminescent strips, the construction of two bridges across the orchestra pit, and alteration of the music hall doors to make room for the elephant to squeeze through. Disney paid for the changes and returned the hall to normal after the tour made its final curtain call."
Full article, which also talks about other things they had to alter for the tour:
http://www.ballet-dance.com/200610/articles/LionKing20060525.html
The Tulsa PAC was celebrating it's 30th anniversary that next year. After Lion King, they installed all new seats, but returned to the no center aisle.