The other place is actually a mall where all but a few bars and restaurants close in the evening. There is a large atrium off to one side. I've flown there once but I suspect as soon as security found me, I'd be asked to leave.
Ya never know....give it another go and hopefully the security folk will find you. If they are cool and you explain what`s going on they may think you`re so wacko they`ll leave you alone with your bliss.
Happened to me....a few years ago they used part of a mall for tai chi after early closures. I took a small deca and started flying one evening. The security and janitorial staff were so bemused they left me alone....crazy fellow flying a kite indoors....leave him be!! Tai chi folks were bemused as well as my flying was like tai chi on speed....