Everyone has an unrealistic view of how long construction actually takes. I call it TLC Syndrome. People see them redo a house or a restaurant on TV in 24 hours and think that is how it gets done.
There is only so fast construction can move because we have divided work in the industry among trades. Here is a real example; the drywall cant go on until all the conduit is run in the walls and inspected. The electrician can't run conduit for power until the drywall company puts up the metal studs and has them inspected. The metal studs can't go up until the structural floor work is done. The structural floor work has to be tested and approved by a testing agency and the building inspector. Each of these people are actually part of a different company and they all have their own regulations, their own inspections, their own insurance, and that insurance won't let them work directly over top some other company's workers.
All these trades and approvals stretches out the process.
To completely renovate a 75,000 square foot building (just guessing) with not only hard construction, but moving elements, electronics, and ride vehicles... Seven months goes real quick.