We need an icon for "slapping myself on the forehead" - Jeff if your previous owners were indeed growing orchids, which sure seems likely given the misting system you have, then the lanai was probably also used for the orchids in winter before you were there.
Lucky, lucky you! Now you have no excuse for holding back, and next time we all make an Apopka run, you must plan to join us. We get wonderful orchids in Apopka direct from the growers at tremendous bargain prices.
Meantime, I'm making a run to Lowe's to see if my store has any Vanda Pachara Delights left. None of my other Vandas are making any move to bloom, argh.