Complex sentence: That venue currently seats 18,500 but is expanadable up to 30,000 seats in 3 seperate increments but there is no specific timeline available when that expanasion would begin or if it would be completed.
Split into simpler sentences: That venue currently seats 18,500 but is expanadable up to 30,000 seats in 3 seperate increments. There is no set timeline available when that expanasion would begin or when/if it would be completed.