Singapore Flyer at 1st didn't have a back up UPS... what
happened ? The visitors got stucked for almost 6 hrs (back in late
2008)... and being rescued by lowering visitors from
165m....
World Class IR trying to save cost ?
Honestly, it depends on the contract specifications. If it was
not called for, its not there. And if someone called for it after
its not there, its VO, and thats alot of money. Who wants to pay
for it? Of course nobody!