The decision to have a common heating and air conditioning system shared by the Convention Center and the Marriott Hotel is a matter of grave concern.
First of all, it will offer dubious construction and operational savings. It may even be counter productive given the extremely disparate natures and use patterns of the structures. Would home owners want to share their heating and air conditioning systems with a super market next door?
Secondly, in the case of a foreclosure on either facility, potential future owners would likely find such an arrangement offputting because they would not be able to control the operations, modifications, repairs and replacement of their core mechanical systems.
This seems to be another example of ongoing project folly, from conception through realization.