Daylight balanced film stock is supposed to be used in daylight. If you are going to be shooting in darker light situations, night, or in doors you may want to choose another film stock. Often times tungsten light will be used to counter this with the daylight balanced film stock in conjunction with a filter. Choose your film stock according to the needs that you have.
Film stock is very expensive so you want to be able to get the right balancing to support and ensure the images you want. Though daylight balanced film stock will be less sensitive to exposure than other types of film stock you should still try to not load your camera in direct sunlight and if you are filming on an older device, such as a Bolex, you may want to seal it up with gaffers tape so that you will not get any film damage.