N.L.B, Continous Working Days, Triple time, mileage, you will not be let off and you don’t want any surprises. You need to be aware of what happens if lunch is late or there is no evening meal or you hit midnight. These figures are substantial and many film carpenters have years of experience in working it all out to the penny, where as many producers and production managers do not. Ask the CM to warn you when you are about to cross boundaries, don’t assume production are aware of convention. It can be a big surprise to the inexperienced designer and his or her budget.