Overnight or longer? This job is being done in sections, so some of the furniture will be shifted from the un prepped side to the completed (and waxed) side of the room temporarily. I figured on putting some squares of carpet under the legs of the stuff that will be positioned onto the newly waxed floor temporarily while the final section will be prepped and laid. I want them to get 3 coats on. I'll do the first one and they can watch to see how a seasoned pro does it. I was told 45 minutes to an hour and a half if it's humid between coats, so 3 coats in a day out to be good. However, I think the janitorial people said that preferably, the first coat needs to dry longer....... maybe overnight?